[Boston.pm] CFR RE: Inline::Java
For CRF, there's also http://crf.r-forge.r-project.org/html/CRF-package.html http://cran.r-project.org/web/packages/RandomFields/index.html http://cran.r-project.org/web/packages/CompRandFld/index.html for use with R, and thus likely with Statistics::R . But http://stackoverflow.com/questions/6524232/conditional-random-fields-package-for-r has some other suggestions. Is CRF one of the techniques discussed today at http://www.johndcook.com/blog/2013/05/29/a-priori-overfitting/ ? - bill Not speaking for $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] C++ books
I enjoyed TEACHING from Deitel C++ (see) how to program books. All examples were complete programs, and all in the book (and on-line/cd), so self contained. Harvey Paul are good teachers, good authors; write their books for use in their own on-site corp training classes. Bill@$dayjob Not speaking for firm Bill, typing with thumbs - Original Message - From: Mike Small [mailto:sma...@panix.com] Sent: Friday, April 12, 2013 11:12 AM To: Boston PM Boston-pm@mail.pm.org Subject: Re: [Boston.pm] C++ books Bill Ricker bill.n1...@gmail.com writes: the book that i taught from was C++ How To Program. http://www.deitel.com/ They have 5 C/C++ books now, plus Java, VB/#, Web, ... Did you like Deitel and Deitel or was it a compromise between the books you like best and what you thought a mix of students with different levels of dedication and enthusiasm would find comfortable reading? When I looked at their C one, it seemed to have a lot of, uh, extra words, to say it politely (granted I had absorbed the idea from friends that KR was the one and only worthy C book by that time). It also looked more suited for a first programming course rather than for a practicing programmer -- i.e. more the equivalent of Stroustrup's Programming Principles and Practice Using C++ or perhaps Glassborrow's You Can Do It. I find it a bit suspicious too that they seem to just flip these things out $book=~ s/C/C++/g or $book =~ s/C/Java/g. Maybe that's not fair, not really having read them. C How to Program ,C ++ how to program, C++11 for Programmers, .Simply C++, Small C++ – available on Safari. I missed the original question, but if OP (Greg?) can wait a bit the next edition of Stroustrup's The C++ Programming Language is supposed to come out by June, revised for the new standard. It's a tricky time to buy a C++ book unless you don't care about C++11 (there's lots of neat stuff in there to care about: http://www.stroustrup.com/C++11FAQ.html#language), since many of the good ones haven't been updated yet or never will be. For instance, Accelerated C++ is often recommended but will it be updated for C++11? Andrew Koenig (my favourite writer on C++, though I never read Accelerated C++) was recommending his wife's (and others') book, C++ Primer 5th ed., which has been updated for C++11: http://www.drdobbs.com/cpp/c-primer-5th-edition-part-1-how-to-revis/240003977 - Mike ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] C++ books
Effective C++ is highly recommended but not introductory !! I think Scott and Damian would both be pleased with your excellent comparison. Bill, typing with thumbs - Original Message - From: David Larochelle [mailto:da...@larochelle.name] Sent: Friday, April 12, 2013 10:12 AM To: Bill Ricker bill.n1...@gmail.com Cc: Boston PM Boston-pm@mail.pm.org Subject: Re: [Boston.pm] C++ books I highly recommend Effective C++http://www.amazon.com/gp/product/0321334876/ref=as_li_ss_tl?ie=UTF8camp=1789creative=390957creativeASIN=0321334876linkCode=as2tag=davlarsblo-20 by Scott Meyers. The best description I can give is that it's the C++ equivalent of Perl Best Practices. This is the recommended book for people that know some C++ but want to learn to program well in C++. It's also available on Safari. -- David On Fri, Apr 12, 2013 at 8:13 AM, Bill Ricker bill.n1...@gmail.com wrote: the book that i taught from was C++ How To Program. http://www.deitel.com/ They have 5 C/C++ books now, plus Java, VB/#, Web, ... C How to Program ,C ++ how to program, C++11 for Programmers, .Simply C++, Small C++ – available on Safari. -- Bill @n1vux bill.n1...@gmail.com ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Passing large complex data structures between process
This would be a great topic for a meeting, either a report later on what you found and how you used it, or as a workshop to evaluate your options. [FYI, Schedule for next Tuesday is Federico will update us on his embedded Perl hardware hacking project.] bill@$dayjob #include not_speaking_for_the_firm -Original Message- From: Boston-pm [mailto:boston-pm-bounces+william.ricker=fmr@mail.pm.org] On Behalf Of David Larochelle Sent: Wednesday, April 03, 2013 10:34 AM To: Boston Perl Mongers Subject: [Boston.pm] Passing large complex data structures between process I'm trying to optimize a database driven web crawler and I was wondering if anyone could offer any recommendations for interprocess communications. Currently, the driver process periodically queries a database to get a list of URLs to crawler. It then stores these url's to be downloaded in a complex in memory and pipes them to separate processes that do the actual downloading. The problem is that the database queries are slow and block the driver process. I'd like to rearchitect the system so that the database queries occur in the background. However, I'm unsure what mechanism to use. In theory, threads would be ideally suited for this case but I'm not sure how stable they are (I'm running Perl 5.14.1 with 200+ cpan modules). Does anyone have any recommendations? Thanks, David ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] CPAN.pm module? h2xs replacement?
Newer perls ship with cpanp as well (p as in plus), which is even slicker. p5p have talked quite a bit of deprecating CPANPLUS and removing it from core. Really ? I'd missed that. What's the beef? I find cpanp's API good for scripting a site_perl library build. (And CpanM provides local mini mirror.) I think you've confused cpanm, which is a CPAN client, with CPAN::Mini,which builds a local CPAN mirror. Yes, I conflated them. Mini client, mini mirror, all m's. Bill @ $dayjob use Pragma::NotSpeakingForTheFirm; ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Template toolkit and floats
Even in just US Dollars, Floats are bad for money. E.g., if you get involved with sales tax, you're better off calculating in Pennies and sprinf'ing the $ . in, you don't want .001 issues. Exceptions to this rule require very careful analysis. - Bill aka n1vux NOT SPEAKING FOR $DAYJOB -Original Message- From: Boston-pm [mailto:boston-pm-bounces+william.ricker=fmr@mail.pm.org] On Behalf Of Alex Brelsfoard Sent: Thursday, January 10, 2013 12:32 PM To: Shlomi Fish Cc: L-boston-pm Subject: Re: [Boston.pm] Template toolkit and floats Thanks Shlomi, My boss told me not to worry about different currencies yet. He's pushing to get the site up asap with the bare necessities. I actually have some similar custom code that I'll be using later when I get more time to implement it (not my first time dealing with international currencies). But thanks very much for thinking of this and providing the link. That's a nice clean collection. --Alex On Thu, Jan 10, 2013 at 5:19 PM, Shlomi Fish shlo...@shlomifish.org wrote: Hi Alex, On Thu, 10 Jan 2013 16:17:06 + Alex Brelsfoard alex.brelsfo...@gmail.com wrote: Nevermind... Sorry... Turned out to be a JS problem actually parseInt vs parseFloat Ugh. On Thu, Jan 10, 2013 at 4:06 PM, Alex Brelsfoard alex.brelsfo...@gmail.comwrote: Hi All, I am working on a custom shopping basket, and using Template to multiple the quantity of each item by its base price, and then also summing it. But I'm losing the floating points. It's coming out as flat INTs. Any idea of how to fix this? Thanks in advance. --Alex I'm glad you got your problem sorted out, but note that you should note use the built-in floating-point arithmetics for currency. See: * https://metacpan.org/release/Math-Currency * http://docs.oracle.com/cd/E19957-01/806-3568/ncg_goldberg.html - What Every Computer Scientist Should Know About Floating-Point Arithmetic. Regards, Shlomi Fish -- - Shlomi Fish http://www.shlomifish.org/ Humanity - Parody of Modern Life - http://shlom.in/humanity Botje Khisanth =~ s/must sleep/must give Botje all my money/ . - Freenode's #perl Please reply to list if it's a mailing list post - http://shlom.in/reply . ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Perl Equivalent to Natural Language Tool Kit
Perl was written by a Linguist. It is a NL toolkit unto itself. CPAN has several linguist modules (eg stem/plurals) We've had a computational linguist visit Boston.pm recently, perhaps she can comment ? bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Presentation ?
Second Tuesday is as early as it gets, next week is 11/08. Anyone got a module or slide deck or cool use for perl they want to share ? If no one wants to do the whole time, we can tag-team / what have you seen cool lately? / lighting rounds. William Ricker Aka bill n1vux # Not speaking for $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Anyone using sitecustomize.pl or userelocatableinc ?
I am attempting to build Perl 5.14.2 with -D userelocatableinc option and -D
usesitecustomize .
This is because local IT filesystem convention does not permit
applications-team supported code in nonvarying FS name like /opt. I can build
Perl and DBI etc, but need to be able to deploy into each business app's
filesystem. Perl doesn't normally like that. Perl 5.10 added these two optional
features to support that, but they don't seem to be used much, at least not
together on Unix. (ActiveState at least uses sitecustomize.pl normally.)
My intent is to use -Dusesitecustomize 's special
$Config{sitelib}/sitecustomize.pl file in final location to patch paths, after
building with fictional prefix and make install DESTDIR=$HOME/test/perl5 for
test and cpanp module builds .
Alas, sitecustomize.pl doesn't seem to be found when $Config{sitelib} (or
rather the compiled in C version actually used) is a relative not absolute
path, as is if and only if userelocatableinc is in effect -
$ head -2 perl/lib/site_perl/5.14.2/sitecustomize.pl
print sitecustomize.pl\n;
$ perl/bin/perl -MConfig -E 'say $Config{sitelib}; say
$Config{usesitecustomize};'
.../../lib/site_perl/5.14.2
define
$
(The magic '...' meaning 'my executable' seems to be not supported in a few
other places to, I logged a bug against Ext-MM today, and perldoc's use of
Perldoc::ToMan also gets confused.)
Maybe I need to set up ENV differently before running a userelocatableinc Perl,
but my PATH and PERLLIB seem sufficient.
William Ricker
Director, Architecture
Fidelity Investments / FPCMS Systems, Arch Data
617-563-0648 / 780-2223
M/S Z1E
william.ric...@fmr.com
Aka BRICKER@cpan aka N1VUX aka william.ric...@fmr.com
http://www.linkedin.com/in/n1vux
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Re: [Boston.pm] Anyone using sitecustomize.pl or userelocatableinc ?
Ok I found my problem with sitecustomize, my PERLLIB was mangled.
(I had hoped I wouldn't need PERLLIB with userelocatable but that doesn't seem
to be the case.)
Still looking for anyone with experience with userelocatable as Makefile.PL
still hates me.
bill
-Original Message-
From: boston-pm-bounces+william.ricker=fmr@mail.pm.org
[mailto:boston-pm-bounces+william.ricker=fmr@mail.pm.org] On Behalf Of
Ricker, William
Sent: Monday, October 17, 2011 7:17 PM
To: Boston PM
Subject: [Boston.pm] Anyone using sitecustomize.pl or userelocatableinc ?
I am attempting to build Perl 5.14.2 with -D userelocatableinc option and -D
usesitecustomize .
This is because local IT filesystem convention does not permit
applications-team supported code in nonvarying FS name like /opt. I can build
Perl and DBI etc, but need to be able to deploy into each business app's
filesystem. Perl doesn't normally like that. Perl 5.10 added these two optional
features to support that, but they don't seem to be used much, at least not
together on Unix. (ActiveState at least uses sitecustomize.pl normally.)
My intent is to use -Dusesitecustomize 's special
$Config{sitelib}/sitecustomize.pl file in final location to patch paths, after
building with fictional prefix and make install DESTDIR=$HOME/test/perl5 for
test and cpanp module builds .
Alas, sitecustomize.pl doesn't seem to be found when $Config{sitelib} (or
rather the compiled in C version actually used) is a relative not absolute
path, as is if and only if userelocatableinc is in effect -
$ head -2 perl/lib/site_perl/5.14.2/sitecustomize.pl
print sitecustomize.pl\n;
$ perl/bin/perl -MConfig -E 'say $Config{sitelib}; say
$Config{usesitecustomize};'
.../../lib/site_perl/5.14.2
define
$
(The magic '...' meaning 'my executable' seems to be not supported in a few
other places to, I logged a bug against Ext-MM today, and perldoc's use of
Perldoc::ToMan also gets confused.)
Maybe I need to set up ENV differently before running a userelocatableinc Perl,
but my PATH and PERLLIB seem sufficient.
William Ricker
Director, Architecture
Fidelity Investments / FPCMS Systems, Arch Data
617-563-0648 / 780-2223
M/S Z1E
william.ric...@fmr.com
Aka BRICKER@cpan aka N1VUX aka william.ric...@fmr.com
http://www.linkedin.com/in/n1vux
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Re: [Boston.pm] Anyone using sitecustomize.pl or userelocatableinc ?
I retract my retraction, I confused myself. I fixed PERLLIB and still won't
auto run $Config{sitelib}/sitecustomize.pl unless I invoke it directly (which
at least does work, but proves nothing).
Still looking for any experience with either userelocatable and/or
usesitecustomize uon Unix (not Windows)
Bill
-Original Message-
From: boston-pm-bounces+william.ricker=fmr@mail.pm.org
[mailto:boston-pm-bounces+william.ricker=fmr@mail.pm.org] On Behalf Of
Ricker, William
Sent: Monday, October 17, 2011 8:02 PM
To: Boston PM
Subject: Re: [Boston.pm] Anyone using sitecustomize.pl or userelocatableinc ?
Ok I found my problem with sitecustomize, my PERLLIB was mangled.
(I had hoped I wouldn't need PERLLIB with userelocatable but that doesn't seem
to be the case.)
Still looking for anyone with experience with userelocatable as Makefile.PL
still hates me.
bill
-Original Message-
From: boston-pm-bounces+william.ricker=fmr@mail.pm.org
[mailto:boston-pm-bounces+william.ricker=fmr@mail.pm.org] On Behalf Of
Ricker, William
Sent: Monday, October 17, 2011 7:17 PM
To: Boston PM
Subject: [Boston.pm] Anyone using sitecustomize.pl or userelocatableinc ?
I am attempting to build Perl 5.14.2 with -D userelocatableinc option and -D
usesitecustomize .
This is because local IT filesystem convention does not permit
applications-team supported code in nonvarying FS name like /opt. I can build
Perl and DBI etc, but need to be able to deploy into each business app's
filesystem. Perl doesn't normally like that. Perl 5.10 added these two optional
features to support that, but they don't seem to be used much, at least not
together on Unix. (ActiveState at least uses sitecustomize.pl normally.)
My intent is to use -Dusesitecustomize 's special
$Config{sitelib}/sitecustomize.pl file in final location to patch paths, after
building with fictional prefix and make install DESTDIR=$HOME/test/perl5 for
test and cpanp module builds .
Alas, sitecustomize.pl doesn't seem to be found when $Config{sitelib} (or
rather the compiled in C version actually used) is a relative not absolute
path, as is if and only if userelocatableinc is in effect -
$ head -2 perl/lib/site_perl/5.14.2/sitecustomize.pl
print sitecustomize.pl\n;
$ perl/bin/perl -MConfig -E 'say $Config{sitelib}; say
$Config{usesitecustomize};'
.../../lib/site_perl/5.14.2
define
$
(The magic '...' meaning 'my executable' seems to be not supported in a few
other places to, I logged a bug against Ext-MM today, and perldoc's use of
Perldoc::ToMan also gets confused.)
Maybe I need to set up ENV differently before running a userelocatableinc Perl,
but my PATH and PERLLIB seem sufficient.
William Ricker
Director, Architecture
Fidelity Investments / FPCMS Systems, Arch Data
617-563-0648 / 780-2223
M/S Z1E
william.ric...@fmr.com
Aka BRICKER@cpan aka N1VUX aka william.ric...@fmr.com
http://www.linkedin.com/in/n1vux
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Re: [Boston.pm] tech meeting next week
Hi! Is there a meeting for tonight? No, its next Tuesday. Correct. 7th is only 1st Tuesday. As late as it can come. Since it is a new term, I am awaiting confirm of room # / availability. Also looking for who had a topic ... bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Perl memory profiling
Quick top-post to annoy Uri - perldoc perldebguts http://perldoc.perl.org/perldebguts.html#Debugging-Perl-Memory-Usage There are several Memory diagnostic modules on CPAN too. Bill -Original Message- Is there a way to profile a perl program's memory from within the program? Specifically, I'd like to take snapshots of the memory usage as various data structures within the program are created/freed. ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] arriving tonight - emergency social meet monday or tuesday?
To my mind, the best reason to dine at Grendel's is to celebrate their historic supreme court victory for separation of Church State. (Though some migh perefer to celebrate anglo-saxon arts and letters, or monster rights.) But I would agree that's not a compelling reason to take a drinking crowd there. Bill, typing with thumbs ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] [Boston.pm-announce] Tech Meeting March 8th, at MIT E51-376 7 ~ 7:30pm
Small number so far. More ? Bill, typing with thumbs - Original Message - From: boston-pm-announce-bounces+william.ricker=fmr@mail.pm.org boston-pm-announce-bounces+william.ricker=fmr@mail.pm.org To: Boston Perl Mongers (announce) boston-pm-annou...@pm.org; Boston PM Boston-pm@mail.pm.org Sent: Mon Mar 07 12:49:13 2011 Subject: [Boston.pm-announce] Tech Meeting March 8th, at MIT E51-376 7 ~ 7:30pm Tuesday, March 8, 2011 E51-376 convene 7pm ish, talk starts 7:30 pm File::Slurp update, Uri see Uri's list postings to download and beta test his new code if you want to preview for the meeting. RSVP for count encouraged but not required, to me bill.n1...@gmail.com or Boston-PM list. Our WIKI http://boston.pm.org/kwiki/ * Tech Meetings are held on the 2nd Tuesday of every month at MIT (directions http://boston.pm.org/kwiki/index.cgi?MITDirections ). o NOTE - Sometimes the lot has filled early, overflow is to Hayward lots (avoid MEDICAL RESERVED spaces!). See alternatives http://boston.pm.org/kwiki/index.cgi?MITDirections o Suggestions for future meetings solicited on Topics page TechMeetingTopics http://boston.pm.org/kwiki/index.cgi?BostonPMCalendar -- Bill @n1vux bill.n1...@gmail.com ___ Boston-pm-announce mailing list boston-pm-annou...@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm-announce ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] use Moose ?
How many objects per action was how slow? (Slow for some SLAs may be fast enough for others. ) I think I am hearing that Moose is good for daemons where both Moose's and your progeram's initialization is once only off the critical path, and request / response are lean using factories; and for load-run-exit scripts which don't need introspection, Mouse is compatible, noticably faster, and enough OO? Bill, typing with thumbs - Original Message - From: boston-pm-bounces+william.ricker=fmr@mail.pm.org boston-pm-bounces+william.ricker=fmr@mail.pm.org To: James Eshelman ja...@nova-sw.com Cc: boston-pm@mail.pm.org boston-pm@mail.pm.org; Drew Taylor d...@drewtaylor.com Sent: Thu Feb 03 10:49:37 2011 Subject: Re: [Boston.pm] use Moose ? On Wed, 2 Feb 2011 13:26:52 -0500 James Eshelman ja...@nova-sw.com wrote: JE Thanks Drew. It's good to hear that there's no noticeable RT penalty after JE startup, and the roles feature looks especially nice, along with the JE compatibility with Perl 6. -- Jim There's a very noticeable penalty if you instantiate lots of objects. I couldn't use Moose for a database loader, for instance, and had to fall back to simple hashes. The speed difference was (for my specific case, which had lots of small objects) between 2 and 200 times slower with Moose, depending on other factors like hitting swap because the memory usage spiked. This is not surprising considering all that Moose does. I am a big fan of Moose and use it whenever I can, but only if I expect relatively few objects to be created and managed. Otherwise I would at least benchmark the performance and consider how the objects are going to be used. Ted ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Csv in, beautiful chart out ?
MW For simple graphs I've used GD and sometimes GD::Graph with reasonable MW results. Ditto, with GD Chart variants. See this list's Archives for Dec 2005. http://www.mail-archive.com/boston-pm@mail.pm.org/msg03654.html (Obviously Text::CSV too) -- Bill n1...@arrl.net bill.n1...@gmail.com ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Perl-based (preferably) scriptable web albumsoftware/modules
You can strip the tags (geo and camera Id; and remove camera signature noise by resizing) before uploading to cloud service or your own server. That is good use for Perl. And a good idea. Hosting it yourself will be decidedly retro. Pretty much every web toolkit includes Album as a demo. Bill, typing with thumbs - Original Message - From: boston-pm-bounces+william.ricker=fmr@mail.pm.org boston-pm-bounces+william.ricker=fmr@mail.pm.org To: 'Boston Perl Mongers' boston-pm@mail.pm.org Sent: Wed Oct 13 14:29:18 2010 Subject: [Boston.pm] Perl-based (preferably) scriptable web albumsoftware/modules For hosting personal photo/video albums on the web there are various options out there like Google Picasa and the like. However, I would like to build my own web photo albums to post them on my own web site. I know that I can link to Picasa web albums from my site but that's not what I'm looking for. (Why? Part of it just for the learning and part of it is a bit of reticence [maybe even unjustified paranoia] of putting too much information in the hands [or datawarehouses] of a few giant web companies that can mine all sorts of personal information from my personal data. For example, someone figured out where one of the Mythbuster shows' main characters live by simply looking up the geotags embedded in some pictures of his backyard that he posted to his own Facebook page. I know I can strip the tags ...) I can think of scripting it up in Perl using, say ImageMagick to create thumbnails, etc. and building html indexes from simple text-based inputs. But then I thought that somebody else has most likely already done that. So I'm looking for suggestions and/or comments good/bad for any scriptable web-based photo album development tools. Thanks, -Nilanjan ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] summer tech social
Any plans for a summer perl mongers social? I will refer that to Uri, our Social Secretary President for Vice. Mitchell's sounds fine except for the ruby part, the noon part, and the davis sq part :) Really ! Says something about the Ruby market if they're not busy ? Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Xpath query acceleration
That wouldn't work, as the document contains items that aren't in the schema, I recall that was the whole point of your walking it yourself rather than using a yes-no external oracular validator, yes. To truly validate to a schema, you must recursively parse the file under control of the annotative grammar which is the schema. I don't expect querying the schema by xpath to work in general case, but your schema may be such you know it will. If it's as easy as determining that this tag isn't even in our lexicon, or our tag of this name doesn't have this attribute, our tag of this name is only allowed with certain parents that do not include the current document's usage, you should be able to mark #FAIL as you go, whichever is driving. You could preprocess the schema into a hash of rules to validate, possibly using Xpath as semantics for magic string values. If the schema is sufficiently abstract that you need backtracking search to determine what bits of the document XML have to be excluded for the rest to validate, you have a horror on your hands. so you'd have to keep track of which nodes you validated, and then still query or walk the document looking for things that weren't covered by the schema. you can delete them when they fail validation, which is what I thought you said you'd do, or keep a list of refs to what fails. I haven't tried using XML::Twig::XPath, but it deviates from the DOM API, which can make it harder to port your code to a different XML library. Yes, it's a just-barely-sufficient-magic hack, not 100% solution. XML was supposed to be less overly-general than SGML, but it's still too too, too. bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Social Meeting for Boston.pm with Alias this week, probably Thursday?
7ish (6:45) It was on list somewhere. -Original Message- From: boston-pm-bounces+william.ricker=fmr@mail.pm.org [mailto:boston-pm-bounces+william.ricker=fmr@mail.pm.org] On Behalf Of Andy Oram Sent: Thursday, May 20, 2010 1:47 PM To: boston-pm@mail.pm.org Subject: Re: [Boston.pm] Social Meeting for Boston.pm with Alias this week, probably Thursday? OK, I get that a bunch of us will meet Adam at Cambridge Brewing Company this evening. But nobody posted a time, so far as I can see. When do Steve and Adam expect to arrive? Andy ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] social meeting with Alias aka ADAMK @CBC Thursday 7ish
Alas I must bow out; gotta finish a rush job for a client. Understood. I hope not to have a similar issue myself! I gave them a 12-16 estimate under group 'Perl' my name Bill Ricker, so we're flexible. Bill @ $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Map address RE: social meeting with Alias aka ADAMK @CBC Thursday 7ish
CBC=Cambridge BREWING Company (Corrected) 1E Kendall Square, Cambridge, MA - (617) 494-1994 One Kendall Square Complex is *near* real Kendall Sq (T), off Hampshire by Broadway, behind the Draper new building behind Tech Square, The parking garage with validation and narrow spaces that Steve mentioned is on Binney. Watch for the live rail grade crossings, the two trains a day are a surprise. OpenStreetMap - http://osm.org/?mlat=42.36637mlon=-71.09135zoom=17layers=B000FTF And that other map ... http://maps.google.com/maps?q=%22Cambridge%20Brewing%20Company%22 Bill @ $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Exceptions as control flow
GL and then there's
GL embedded as in must achieve a frame rate of 30 hz.
Where
30 Hz is a variable,
and
must may be of varying strength / harm -
* otherwise the screen refresh will be skipped jerky, or only partial
ugly;
...
* otherwise Flight Law control loop time is violated and positive
control
of the airframe is no longer guaranteed
expensive
Yes. longjmp was once not only less C code but far far quicker to unwind
a deep stack than the standard
return(-1) if rc 0; # lather rinse repeat
in old C on old slow hardware without optimized stack instructions. The
return()'s register swizzling is far cheaper on today's hardware which
has support for such, so that is less true today. Doing an exception
throw in OO C++ or Java or even Perl requires MUCH MORE *implicit* work
as the exception propagates through the call stack checking at each
frame for potential catches and potential destructors for on-stack
objects being freed.
An actual longjmp in C++ would cause any off-stack resources held by
over-jumped stack to leak.
Exceptions are perhaps the least pernicious form of COME FROM flow
control, but that is damning with faint praise.
COME FROM are as a class generally even more evil than the GO TO.
However, TRY{THROW}CATCH{} exceptions (including eval{die} and even
longjmp ) are less egregious action-at-a-distance COME FROM than their
older siblings the SIGNAL handlers like $SIG{FPE} and PL/I ON
CONDITIONs. At least die or THOW provides a syntactic marker at the
spot that the COME FROM might come from, whereas any arithmetic
expression is a possible raiser of $SIG{FPE}, and any opcode may be hit
by an external $SIG{KILL} or $SIG{INT}. And the CATCH is conveniently at
the point of last call, not buried somewhere in boilerplate like
$SIG{KILL}= \sub {state $zombie; $zombie++};
Such action at a distance is best used only as the emergency escape
hatch they were designed for. SIG is lean, as it needs to be at
Interrupt level, and it can throw a die, which can be as expensive as it
needs to be to free resources as it winds up the stack, since it is only
called exceptionally.
If one actually needs non-emergency action-at-a-distance (not common,
usually a refactoring is what is needed, possibly into a process
pipeline), Co-Routine callyield is often an appropriate, controlled,
and efficient mechanism
[Eg http://search.cpan.org/~mlehmann/Coro-5.21/Coro/Intro.pod ]
A good reason for such is when a parse-transform-generate pipeline
needs to be optimized as thread-to-thread in-memory pass instead of
slower IPC, eg when doing a Jackson Program Design inversion of a parser
to create the generator. (although XSLT or XProc may be better than
bespoke implementation of a complex XML2XML transform, someone has to
build the XSLT XProc engines, and sometimes source or target doc isn't
in the *ML family ... .)
Another example is http://search.cpan.org/dist/Perl6-GatherTake/
(EXPERIMENTAL!) which uses Coro to implement Perl6's gather-take
keywords to build lazy list generators.
And PLACK/PSGI use Coro
http://deps.cpantesters.org/depended-on-by.pl?dist=Coro-5.21
Bill @ $DayJob
Not an official statement of anyone
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Re: [Boston.pm] Exceptions as control flow
But do all programming techniques need to be approved by the FAA? Any used in licensed devices subject to FAA or FDA or NSA/DoD or NASA review, ranging from the Space Shuttle flight computer to on insulin pump. Testing doesn't count with them. That puts *Engineering* into Software Engineering. Bill Been there, done that, in a prior life ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] ConfigObj, Config::Std, [PBP]
There are a slew of perl INI, config, and file read/write/rewrite modules on CPAN, with varying degrees of 'round trip'. I interpret Federico's jonsing wrto the linked Python mod as a request for contextual preservation (presentation: comment, sequence, whitespace), which is required for sanely allowing a Perl-Tk/-Wx/PythonTk/etc scripted GUI wizard to edit a hand-crafted config file, and to honor the principle of Least Surprise. Round-trip and preserve claims on CPAN include - * http://search.cpan.org/~makamaka/JSON-2.17/ (data only, not comments) * http://search.cpan.org/~ovid/TAPx-Parser-0.50_07/lib/TAPx/Parser/YAML.pm (ditto) * http://search.cpan.org/~adamk/YAML-Tiny-1.41/lib/YAML/Tiny.pm (ditto) * http://search.cpan.org/~dconway/Config-Std-0.007/lib/Config/Std.pm (context too) * http://search.cpan.org/~spang/Config-GitLike-1.03/lib/Config/GitLike.pm (context) * http://search.cpan.org/~eric/OpenPlugin-0.11/OpenPlugin/Config/Ini.pm (context) Most general module with round-trip for contextual info (comments, whitespace, sequence) not just data seems to be Damian's Config::Std. Damian wrote this for the PBP book since there wasn't a module existing at the right mix of richness and simplicity for him to recommend (Papa and Baby Bear semi-recommendations are Config::General and Config::Tiny, respectively, neither of which preserves context). The latest flurry of updates (Sep Nov 2009; after 3.5 year hiatus) made progress that isn't reflected in the RT queue (no 'Fixed in' for v0.05 .. V0.07). https://rt.cpan.org/Public/Dist/Display.html?Name=Config-Std http://cpansearch.perl.org/src/DCONWAY/Config-Std-0.007/Changes At least that burst of activity means I can stop calling it dormant (which by policy is a reason to reject a FLOSS distribution at $DayJob). Adopting this module would be a good project for an ambitious person or group, as the ecological niche is still open for vigorous growth. Would Boston.PM be interested in doing perhaps twice yearly workshop / coding sprints to validate test implement test enhancements to Config::Std, if Damian would have us ? Bill Permanent Interim Facilitator, Boston.PM (or is that Interim Permanent?) Hardly speaking for $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Padre, the Perl IDE
Have we had a Padre demo at a past Boston.pm meeting? We had a discussion of IDEs in general, I forget if there was a mini demo. Padre has grown sufficiently that it deserves a full meeting. * project history, scope * basic demo * plugins * neat tricks * its code * connection to EPO * ... Perhaps we can tag-team a set of Padre mini-talks if no one wants to do the whole Bill @ $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Padre, the Perl IDE
Can I ask the stupid question? What would be the advantage of using this over Eclipse + EPIC? If your shop is 80% Java, 20% Perl, likely none. If your shop is 80% Perl, 20% C, the likely competition is Emacs, not Eclipse. bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] New version of Parse::Gnaw and a question aboutBenchmark
[3x] is really surprising to me. The generated parsers don't always run as fast as might be wished. I think Greg is surprised it's ONLY 3x faster, given PRD's notorious time for expressivity trade. Either Greg needs a bigger test case ... One where PRD is taking multiple seconds to answer ... Or some tweaking. Bill @ $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] [Perladvent] mod_perlite... working!
Oh that. It hoses https too for Mac and Linux. I have only seen that idiocy on lame hotel pay internet ... (For some reason MSWindows is sufficiently non-standards compliant to adapt to these lame net appliance that were only tested with MSWin... . People should read the RFCs ...) Bill, typing with thumbs - Original Message - From: boston-pm-bounces+william.ricker=fmr@mail.pm.org boston-pm-bounces+william.ricker=fmr@mail.pm.org To: perladv...@pm.org perladv...@pm.org; Boston Perl Mongers boston...@pm.org Sent: Tue Dec 08 22:58:11 2009 Subject: Re: [Boston.pm] [Perladvent] mod_perlite... working! BTW, I think I've found a solution to my SSH sessions freezing at random It's discussed and explained in the thread here: http://bit.ly/5Kh2PE Summary: tcp window scaling* freaks out various types of old or stupid network equipment. To disable it on the offending system, issue the following command: sudo sysctl -w net.ipv4.tcp_window_scaling=0 I don't know exactly where the problem is occuring in my case, but issuing that sysctl on my laptop fixed the issue with ssh lagging to the systems behind the PIX at work... but ssh sessions to my linode server weren't fixed until I did it on that host as well. There's also an article on this issue here: http://lwn.net/Articles/92727/ * introduced in the linux kernel around 2004 but not turned on by default until around 2006 -- -- Steve Scaffidi step...@scaffidi.net ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Possible subject/activity for tonight
Sounds great ! Benchmarking workshop could be done annually to our benefit. Bill -Original Message- From: boston-pm-bounces+william.ricker=fmr@mail.pm.org [mailto:boston-pm-bounces+william.ricker=fmr@mail.pm.org] On Behalf Of Steve Scaffidi Sent: Tuesday, October 13, 2009 3:51 PM To: Boston Perl Mongers Subject: [Boston.pm] Possible subject/activity for tonight At $work we are about to do some refactoring and in order to find out where we will get the most bang-for-the-buck we need to do some benchmarking. Benchmarks are an interesting topic (especially combined with profiling) - Benchmarks are fairly easy to write, but difficult to *get* right. However, they're an excellent tool to have and use. Uri and I were discussing the idea that we could demonstrate some use of Benchmark.pm, writing a few simple cases and then discussing how to interpret and improve them. I'll come with everything we need already installed on my laptop... What do y'all think? -- -- Steve Scaffidi step...@scaffidi.net ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Binary search requirements + estimates (not empty)
Are the prefix uniform size? Or can a small number of expected matchable prefixes be parsed out of the 250k strings? Are you doing this once, or new set of 7500 perefixes every minute? Are both lists already sorted? If big one isn't that dominates. If big one is but not according to primitive lt(3P) all algs will be slowed by custom compare (unless inline::C or XS, and there is still some ovh).. Master file update aka merge of sorted files would find all hits in time O(N+M) and space O(1). that sounds bigger than O(ln N * M) for your numbers, but it leverages the O(N) load of big list which is required before the first O(ln N) search. Map-Reduce is the modern way if you have cpu farm, but optimizes response time not global warming. Bill Not speaking for $dayjob Bill, typing with thumbs ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Perl Boolean Expression builder
To minimize the Boolean expression or compute one from a truth table, I think you want http://search.cpan.org/~kulp/Algorithm-QuineMcCluskey-0.01/lib/Algorithm /QuineMcCluskey.pm References - http://hopper.unco.edu/KARNAUGH/Algorithm.html http://en.wikipedia.org/wiki/Karnaugh http://en.wikipedia.org/wiki/Quine-McCluskey_algorithm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Meta-user group meeting! May 2nd summit about how to coordinate a user group
We got this thru the Leaders' lists. That's a busy weekend. Maybe Uri, Ron and I will draw straws ... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Git tutorial
I was thinking the same. There is one really good online 'book' and a good supplement, and a well reviewed pay-pdf, which will be in my followup message Wednesday, and I will likely include notes on other things seen. (I will explain why I am especially interested in Steve's talk tomorrow) Bill Bill, typing with thumbs - Original Message - From: boston-pm-bounces+william.ricker=fmr@mail.pm.org boston-pm-bounces+william.ricker=fmr@mail.pm.org To: Steve Scaffidi sscaff...@gmail.com Cc: Boston Perl Mongers boston...@pm.org Sent: Mon Apr 13 09:32:05 2009 Subject: Re: [Boston.pm] Git tutorial On Sunday 12 April 2009 15:59:38 Steve Scaffidi wrote: I stumbled upon this article the other day, and it's a fun read and really highlights some of the things I like about git. On the topic of stumbling upon documentation, it would be wonderful to have a commented bibliography of what's available, on the net or off, with a brief description of the focus and audience of each document, and a critique of its quality (the minimal incarnation of this critique could be a 1-to-5 star rating, althoug that's a bit too low-dimensional for me). I think this would help people, especially those that are newcomers to git, to know where to start, and then where to go for specific topics. From what I've seen, git is in a relatively good position, in the sense that there isn't a ton of documentation, tutorials, etc. (so there is less opportunity for contradictory or wrong info, and its lengthy weeding) and what there is is generally fair to good quality. On the other hand, I'm not sure there is a source that could be considered excellent... Bernardo Rechea ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] XUL outline or ppt : Larry's MIT talk
So the reason why I like the idea of these systems based on XUL is that they are web-friendly, there is a single format for everyone, Good and I can just type down the text and it gets aligned for me. What tool are you looking at? (The raw xul makes html+css look good.) I am not so much against Powerpoint as much as pro-outliners, Outliners are good for organizing thoughts, not so good for communicating especially text-based outliners. Have you seen a good text outliner since DynoNotePad ? bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Placenames ambiguity RE: Discount for
If you go international, Longest list of cities proper that I found quickly http://www.citypopulation.de/world/Agglomerations.html cuts off at 1E6 (three way tie for #s 476 477 478). There are three exact matches on 'English Name' in million-Plus cities- Hyderabad Birmingham Valencia In English, We don't latinize Colombo, Sri Lanka, so it doesn't match Columbus OH; Colombo, Brazil city proper is less than a quarter million, but the conurbation is 2M+, so that could count. I am surprised that each San/Santa/santo/saint only breaks 1E6 once, except St.Louis + Sao Luis. Going down below half million for top thousand, China gets a some internal dups, and I finally find SANTIAGO DE LOS CABALLEROS as a near dup for Santiago (Chile), and Santiago de Cuba and Santiago de Compostella (Spain) still aren't populous enough to make top 1000 list. Only that one pair of Old-Country and American namesakes are both Million+ ! For the rest, it varies which is larger. Combining a long US List with the world Million or Top Thousand would find Rome NY, Naples FL, maybe Paris MAINE if it's really long. Would need an equally detailed list of English market towns etc to find the smaller namesakes, e.g. Portland, Portsmouth, Cambridge, Weymouth, Falmouth, Reading, Boston. Bill @$DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] platypus RE: Larry's MIT talk
platypus Platypi were also mascots for flexible inheritance in OO circles for demonstrating the problems with monotonic, non-overidable inheritance, like only calling parent methods through parent typed pointer, in C++ 1.0. I have a pedagogic puppet somewhere, from back when I was teaching from Budd's book http://www.powells.com/biblio?PID=24750cgi=productisbn=0201824191 (ostrich and penguin are less exceptional) ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Arlington Springfield RE: Placenames ambiguity RE: Discount for
Uri is correct, but it's close and depends on what the meaning of is is. Springfield wins 31+2 to 26+4 instances in the US, but Arlington appears in more states 29 to 26. The plus two and four are for named villages within an incorporated larger city, and double counts Arlington in Arlington Wisc, and counts Jacksonville FL village/neighborhoods for both. So both names appear in more states than not. Only WV has two Arlingtons (2+0) besides the nested pair in WI (1+1), but for Springfields, NJ has 2+1, WI 5+0, FL 1+1. They're at least all in different counties. Springfield MA is credited as being the Original (population 154,082), and Springfield MO the most populous (154,777) at last census. So total population of any pair is pretty low, but the sum could be vaguely respectable Arlington County,VA, (population 206,800, undivided) isn't so much more; like the larger Arlington TX (371,038, 50th largest city in it's own right) it is not it's metropolis standard bearer. They're a pretty decent pair, but in either case you'd say Greater Washington or Greater DalWorth was the host. The states with one or both: ALa AZa CAasCOasFL(a)s(s) GAasILasINas IOa KAa KYasLAs MEs MD(a) MAasMIasMNas MOs NEasNHs NJss(s) NYasNCa OHasORasPA(a) SCs SDasTNasTXa VTasVAasWAa WVaas WIa(a)s [http://en.wikipedia.org/] We should encourage the states with neither to adopt one or both ! ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] not so regular expressions
but IIRC the standard ivory tower regular expressions have grouping, alternation, and closure, or in re terms, () | and *. Much of perl's re forms can be created from those (e.g. x+ is the same as xx*). The original thing that was outside the official scope was backreferences ... However, the ivory tower definitions are useful mostly for analysing complexity. Sometimes you need a more powerful mechanism Correct. Hence we have something more useful which needs a new name, at least in theory. Concise theoretical definition unmuddied by well meaning wikignomes at the always useful MathWorld ... http://mathworld.wolfram.com/RegularExpression.html ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Larry's MIT talk
He actually had nearly 500 slides. And all in XUL, allegedly :-) There are a couple Perl based tools to generate Xul slideshows from an outline. I hope he used one of those, would like to know which. Probably can find out with google-fu, we won't be the first to ask. When the toolchain and minimalist stye is considered, it's more of an animated outline and visual accompaniment than a traditional Death by PowerPoint. Bill, typing with thumbs ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Larry's Harvard and MIT talks
i think it is ektachrome shot with an instamatic. Sounds fun. I was tied to the desk, it being end of quarter. I will have to get to MIT Wednesday. How was the crowd? Bill @$dayjob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] (Parking) Re: Larry's Harvard and MIT talks
Is Alewife interesting? Alewife is quite appropriate, for those from north or west especially. Since I live near a T stop at the cheap end of the redline, I'll just ride the T tomorrow. But I commend Mabel and or the alewife T garage to those passing that way. bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Git workshop for April
Having tiered local and global commits make sense to me. Having one tool with tiered storage supports both usec-ases of personal undo and global sharing. It solves the discordant motivation problem - do you commit early and often or only when it's ALL working again? (Some TDD/agile say *both* and change work habits to fit, which can be a good thing, but some refactorings are complex enough that multiple undo checkpoints are useful but exposing all of those to the team is not.) ClearCase provides this with streams as a separate concept from branches. Good point about nomenclature. Bill, typing with thumbs ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Larry's Harvard and MIT talks
Does anyone know whether the Harvard (3/31) and MIT (4/1) talks on the same topic, or two different talks? So far the ballistic programming title has been associated with MIT talk and others on this tour, so it might be identical, but I have not seen a title for harvard, and can not google for larry talks this year with title notequal. So unless Larry or HCS post a topic wzdon't know for sure. ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] [Fwd: [HCS] Larry Wall - Inventor of Perl -onTuesday 3/31]
I'd be a little suspicious about an event on 4/1, at MIT, involving Larry Wall. By 'a little suspicious about' I mean 'very interested in'! With a title of 'The Art of Ballistic Programming', I would say you might be right. Bill's alter ego @$DayJob; ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] challenge: Python one-liner
# python -m SimpleHTTPServer serves the current dir out on port 8000: So Python ships with a one-line security breach? ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] challenge: Python one-liner (smallest perl webserver)
So I guess if you've broken lightd apache scp rsync svn/git and netcat, it's nice to have one more option? Most cpan http server modules seem to assume you want to share a service not a bunch o files, since there are plenty of static servers already, and what would a Perl coder want to share but Perl code eh? Besides, writing a bad ten line replacement for (this use case of) httpd is a standard Perl 101 midterm assignment. but it's lots more than 10 to be half nice, EG http://labe.felk.cvut.cz/~kral/SEMINARS/perlnet.html#webserv . Why it even takes 10 with http://search.cpan.org/~sjquinney/HTTP-Server-Simple-Static-0.07/lib/HTT P/Server/Simple/Static.pm but the sample code there could be CPANified to make a module that emulates Python's flaw exactly. ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] challenge: Python one-liner
IO::All's documentation includes a one-liner for this. Awesome. Thanks, couldn't remember where I'd seen it. For the truly lazy, http://search.cpan.org/~ingy/IO-All-0.39/lib/IO/All.pod#A_Tiny_Web_Serve r ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Git workshop for April
Would we be using local repos on our individual laptops only, or would we be cloning and checking back to a shared net repo as well? If shared, do we need an in-room server or just a scratch repo on some public host to which we can grant commit bits harmlessly? Good news is laptop use at mit seems easier this year, monthly reg seemingly not required.. Bill, typing with thumbs ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] To Any use.perl.org editors on list
I have posted announcement of tonight's meeting as http://use.perl.org/~n1vux/journal/38278 with submission to front page, perhaps some one can boost it along? William Ricker Director, Architecture Fidelity Investments / FPCMS Systems, Architecture Services 617-563-0648 / 780-2223 M/S Z1E william.ric...@fmr.com http://www.linkedin.com/in/n1vux ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] template::simple comments
bench...@281 should be just while @data Same issue in main code? Does an undef in data crash, cancel section, ? Should be in t/ -Bob Simple.pm - use $child_chunk_name etc instead of $1 $2 where use has slide away from the m///. -Bobbie Bill, typing with thumbs ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] slice of life
Perl's is the greatest slicing since bread. (And the best bread is sliced *just* before toasting/serving.) --Original Message-- From: Bernardo Rechea To: boston-pm@mail.pm.org Sent: Dec 4, 2008 10:38 Subject: Re: [Boston.pm] slice of life On Tuesday 02 December 2008, Uri Guttman wrote: yes, i like slicing! I sounds like we are big fans of slicing... Now, what kind of slicing would you say Perl's is more like, this: http://en.wikipedia.org/wiki/Slicer ? or more like this: http://en.wikipedia.org/wiki/Microtome ? :-D Bernardo ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm Bill, typing with thumbs ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] It's that time RE: Follow up Re: Boston.pm Perl Mongers 11/18 tech meeting
In 11 minutes it will be octal 111 = decimal 1227133513 = hex 0x49249249 = (as time_t) Wed Nov 19 22:25:13 UTC 2008 as described yesterday (or earlier today UTC) Bill -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Ricker Sent: Wednesday, November 19, 2008 12:26 AM To: Boston Perl Mongers Subject: [Boston.pm] Follow up Re: Boston.pm Perl Mongers 11/18 tech meeting The November meeting of Boston PM will be a was last night Tuesday the 18th (instead of normal 2nd Tuesday, due to some folk having a holiday on 11/11) I gave a talk meandering through un/pack(), time_t, magic numbers, and old skul bit-banging entitled Magic Numbers Un/Pack / a use.perl.org magical mystery tour I am nearly mystified why slide transitions were glacially slow tonight. Transitions are fine at home, is it the Wacom? MIT network? Moon phase didn't change ... Slides are posted at (remove spaces) http : / / world . std . com /~wdr/ x /pm/magic/magic_pack_tour.pdf This Free-software generated PDF (OOo 2.3) should be viewed with a genuine Adobe reader as Evince and Xpdf get the overlays wrong. Perl scripts are in same directory as the html as is a tarball. To answer the Question from the floor, Ilya'o'clock willbe just before Solstice and just before our normal date for January. ILYA Sat Dec 20 02:32:33 2008 GMT . Fri Dec 19 21:32:33 2008 ET Ilya Tue Jan 13 11:22:09 2009 GMT . Tue Jan 13 06:22:09 2009 ET Jerrad gave a public service announcement on the Advent Calendar project. Volunteer! get writing! http://advent.pm.org Uri has volunteered for December, Greg for January, so we are now talking reservations for Feb. Refreshments provided by our kind sponsor CIDC.com ; be Sure to mention Boston.PM when you send them a resume. -- Bill [EMAIL PROTECTED] [EMAIL PROTECTED] ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Perl Mongers SKIP WEEK to 11/18 RE: meeting on tuesday?
what announcement? Boston.pm.org http://boston.pm.org/kwiki/ and our IRC channel and http://www.mail-archive.com/boston-pm%40mail.pm.org/msg05129.html I should re-send to Announce list tonight since others will have not noted it either. ] I am preparing a talk meandering through un/pack(), time_t, magic ] numbers, and old skul bit-banging for November 18. (It is not ] appropriate for October; which will only make sense when I get to the ] last slide. unless i spring the punchline early.) As it happens, my topic fits that date perfectly. (So I need to do MY slides !) And may re-appear at Boskone in February. and my offer for the talk is still there. :) Didn't you discuss table-driven testing before? But it was as a side issue to something else, a full talk would be good. Maybe by December you could have a few slides of manifesto and frame to go with the code? So calendar http://boston.pm.org/kwiki/index.cgi?BostonPMCalendar looks like Next November 18, 2008, 7:15 E51-376 ** Note date - week late since 2nd Tuesday is 11/11 a rare Non-Monday Holiday for some ** time_t, magic numbers, old school bit-hacks, and Perl. BillRicker Advent Calendar PSA Future December 9, 2008, 7:15 E51-376 ? Uri, Table Driven Testing, as seen in Sort::Maker Advent Calendar PSA Deal? bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Perl Mongers SKIP WEEK to 11/18 RE: meeting on tuesday?
sept 17? for the november meeting? i can't remember If sir would like, we have a fabulous new product available. They call it the calendar. ooh, a punchline! it had better be a good one! I rather doubt it. Nerdy geeky. More of a James Burke /Connections/ *ta~da* moment than a punchline. (but without his wonderful production values.) But /why/ the topic fits the date exquisitely is a surprise, nerdy geeky cute, albeit not so funny. -- bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Concordance RE: ackathon design notes
Concordances are fun! This also hits a particular itch of mine, namely concordance generation Looks not unlike KWIC generator -- Key Word In Context indexing. Look up modules for that! (Or ACM Algorithms.) Uri's comments about fit of your suggestions with Ack are right on -- your 1.2.3. ideas should be logged as Enhancement Requests on http://code.google.com/p/ack/issues/list . My (not very good) solution to enabling search across line boundaries was to slurp the files whole sale. slurping a file incurs the risk of running into a large file that will consume all your memory. Works for even Novel sized files on today's machines, and anything larger will have been input in chapter or volume files. Uri's buffering technique -- criticized by Charles for bypassing charset patching -- would also solve this for you. In NLP it's common to have large multidocument files, mostly as a quick and dirty way to avoid some of the filesystem costs of opening many, many small files, so slurping files is more likely to run into memory issues. How large is large? If you bunch small files and keep large files single, it should be ok on any modern machine, unless you're running VISTA on a Designed for Win NT Pentium 1. I think the idea of managing a buffer is very promising, See Charles's discussion on-list, as Unicode compatibility of buffering impacts your intended use! And, lastly, I see in my notes that doing word context is around 120x slower than doing character context (and I tried a bunch of ways of doing both), but it may very well be that there are better ways... I fear trying to do Char, Word, and Line context in one code will undo the optimization we're trying to do. [EMAIL PROTECTED] @ $DayJob ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] job postings
i may be evil but not THAT evil! :) Uri, it's not about any actual evil. I would really really like to say Yes to your kind offer. But Sean and I have to worry about the *perception* of evil even where it isn't. Local companies, some of whom sponsor Boston.PM, expect postings to the list via the volunteer screener will avoid paying a headhunting fee. Having a headhunter screen the messages would make them expect evil. and doing anything wrong with the local leads would be counterproductive to me and my stellar reputation! :) Yes, *We* know you you're schizophrenic enough to handle it and committed enough to the Perl Community do the right thing for the organization and community (and thus for your own *longterm* good) -- And the Perl folks at the companies may even know that. But the HR departments only know (fulltime) headhunters in general and will expect otherwise, no matter what we know or expect ourselves. We don't want our sponsors to walk on us. We don't want local companies to be scared off submitting jobs for review. Sorry Uri, but unless you were to swear off taking fees from *all* local business (which I can neither ask, nor suggest nor expect), I think we need to have someone else, someone who *appears* *objectively* neutral, to be approving the job postings. I can do that chore (as it comes with the role), or maybe Ronald would like to continue to do that, or maybe someone else would like to. But Sean (as employee of a sponsor and thus an active competitor for resources) and Uri (as a part-time Headhunter) both must be excused from this duty. Or we could consider a change of policy to just allow posting (with same caveat of locality and relevance), thus avoiding the issue entirely. Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] perl6 talk wanted for BLU
Uri, Bob, Tom, et al - Echoing what Tom said between when I started writing this and now (distracted by T-storm) - While BLU might want an internals talk, I'm guessing they really want at Features + Timelines talk, and would find a 5.10 / 5.12 / 6.00 roadmap update useful. Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] pizza for meeting
Any comments on distribution of soda, since I'll be making the pickup? Bill, typing with thumbs - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: [EMAIL PROTECTED] [EMAIL PROTECTED] Cc: boston-pm@mail.pm.org boston-pm@mail.pm.org Sent: Mon Jun 09 10:30:12 2008 Subject: Re: [Boston.pm] pizza for meeting They sell somewhat pricey soda, so Ron brings a bag of ice, and essentially whatever soda's on sale (leaning toward a particuler flavor distribution). I suggest everyone bring their own mug :-P -- Free map of local environmental resources: http://CambridgeMA.GreenMap.org -- MOTD on Setting Orange, the 14th of Confusion, in the YOLD 3174: Capitalism is the absurd belief that the worst of men, for the worst of reasons, will somehow work for the benefit of us all --John Maynard Keynes ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] BLU Wednesday (19th)
While the overlap may not be great, the Boston Linux Unix User Group does hold the monthly meetings on the 3rd Wednesday (the 19th for March). The potential overlap is not insignificant - * Tom Metro (regular both) * Mark Dulcey (except those terms he's busy Weds or Tues) * Doctor MO has visited each * myself (regular both) And possibly others I'm forgetting (sorry!). And the March BLU speaker is the always entertaining Christoph, on high-end Linux Audio. http://www.blu.org/cgi-bin/calendar/2008-mar http://bisque.linuxsoup.com/?q=node/28 ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] BLU Wednesday (19th)
The Boston.PM crowd would be welcome for Linux Soup Audio and Cambridge Brew (BLU cheese) after. Bill, typing with thumbs - Original Message - From: Martin Owens [EMAIL PROTECTED] To: Ricker, William Cc: Boston-pm@mail.pm.org Boston-pm@mail.pm.org Sent: Mon Mar 10 19:16:42 2008 Subject: Re: [Boston.pm] BLU Wednesday (19th) Would it be bad to crash the BLU event and organise the BPM at the CBM (as usual) afterwards? On 10/03/2008, Ricker, William [EMAIL PROTECTED] wrote: While the overlap may not be great, the Boston Linux Unix User Group does hold the monthly meetings on the 3rd Wednesday (the 19th for March). The potential overlap is not insignificant - * Tom Metro (regular both) * Mark Dulcey (except those terms he's busy Weds or Tues) * Doctor MO has visited each * myself (regular both) And possibly others I'm forgetting (sorry!). And the March BLU speaker is the always entertaining Christoph, on high-end Linux Audio. http://www.blu.org/cgi-bin/calendar/2008-mar http://bisque.linuxsoup.com/?q=node/28 ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Punt advised RE: Reminder: Tech Meeting, Tuesday, February 12, at MIT
Your local Mr.Weather / Mr.Safety chimes in ... Would be better part of valor to take a rain check until it's *only* rain. Driving after could be particularly hazardous for those returning North /or West, and will be hazardous at times even here in Boston Proper / Cambridge river front. NWS has upgraded to WINTER STORM WARNING for All but coastal SE MASS, RI. http://www.erh.noaa.gov/er/box/ Under a WARNING, responsible meetings are deferred. Get home while you can. -- BILL / N1VUX Winter Storm Warning for Central Middlesex County County (Zone MAZ005) http://www.erh.noaa.gov/box/displayHazardByCounty.php?locationCode=MAZ00 5|MAZ026warncountyname=Middlesexpil=BOXWSWBOX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE TAUNTON MA 251 PM EST TUE FEB 12 2008 ...A SIGNIFICANT WINTER STORM WILL IMPACT INTERIOR SOUTHERN NEW ENGLAND THIS EVENING THROUGH MIDDAY WEDNESDAY WITH SNOW AND THEN ICE... [..city county list..] 251 PM EST TUE FEB 12 2008 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 4 PM EST WEDNESDAY. THIS WINTER STORM WARNING INCLUDES ALL OF SOUTHERN NEW HAMPSHIRE...AS WELL AS WESTERN...CENTRAL AND MUCH OF NORTHERN MASSACHUSETTS EXCEPT FOR THE IMMEDIATE COAST. SNOW IS EXPECTED TO DEVELOP ACROSS WESTERN MASSACHUSETTS BETWEEN 430 AND 6 PM. THE SNOW WILL DEVELOP ACROSS SOUTHERN NEW HAMPSHIRE...AS WELL AS CENTRAL AND NORTHERN MASSACHUSETTS BETWEEN 630 PM AND 8 PM. ONCE THE SNOW BEGINS IT WILL QUICKLY BECOME HEAVY...FALLING AT THE RATE OF 1 INCH PER HOUR AND REDUCING VISIBILITIES TO UNDER ONE HALF MILE. ROADS WILL QUICKLY BECOME SNOW COVERED AND TRAVEL WILL BECOME QUITE HAZARDOUS BY MID TO LATE EVENING. THE SNOW WILL THEN CHANGE TO SLEET AND THEN TO FREEZING RAIN BETWEEN 1 AM AND 4 AM ACROSS MASSACHUSETTS...AND BETWEEN 3 AM AND 6 AM ACROSS SOUTHERN NEW HAMPSHIRE. FREEZING RAIN IS EXPECTED TO BE FALLING ACROSS THIS REGION DURING THE WEDNESDAY MORNING RUSH HOUR...SO UNTREATED ROADWAYS ARE EXPECTED TO BE ICY AND SNOW COVERED. THE FREEZING RAIN SHOULD FINALLY CHANGE TO RAIN ACROSS MOST LOCATIONS BY LATE MORNING OR EARLY AFTERNOON ALTHOUGH A FEW OF THE NORMALLY COLDER SPOTS IN SOUTHERN NEW HAMPSHIRE MAY STILL BE AROUND FREEZING THROUGH MID AFTERNOON. HEAVY RAIN MAY RESULT IN SOME URBAN AND POOR DRAINAGE STREET FLOODING DURING THE AFTERNOON. BEFORE THE CHANGE OVER...SNOW WILL ACCUMULATE 4 TO 7 INCHES ACROSS THE REGION WITH THE HIGHER AMOUNTS MOST LIKELY IN SOUTHERN NEW HAMPSHIRE. AN ADDITIONAL ONE QUARTER INCH OF GLAZE IS POSSIBLE ON TOP OF THE SNOW BEFORE A CHANGE TO ALL RAIN. A WINTER STORM WARNING IS ISSUED WHEN AN AVERAGE OF 6 OR MORE INCHES OF SNOW IS EXPECTED IN A 12 HOUR PERIOD OR FOR 8 OR MORE INCHES IN A 24 HOUR PERIOD. TRAVEL WILL BE SLOW AT BEST ON WELL TREATED SURFACES...AND QUITE DIFFICULT ON ANY UNPLOWED OR UNTREATED SURFACES. == Winter Weather Advisory for Southeast Middlesex County (Zone MAZ014) http://www.erh.noaa.gov/box/displayHazardByCounty.php?locationCode=MAZ01 4warncountyname=Middlesexpil=BOXWSWBOX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE TAUNTON MA 251 PM EST TUE FEB 12 2008 ...A SIGNIFICANT WINTER STORM WILL IMPACT INTERIOR SOUTHERN NEW ENGLAND THIS EVENING THROUGH MIDDAY WEDNESDAY WITH SNOW AND THEN ICE... [... City county list ...] 251 PM EST TUE FEB 12 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST WEDNESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST WEDNESDAY. THIS WINTER WEATHER ADVISORY INCLUDES COASTAL AND SOUTHEAST MASSACHUSETTS...AS WELL AS CONNECTICUT...AND MUCH OF RHODE ISLAND. SNOW IS EXPECTED TO DEVELOP ACROSS CONNECTICUT BETWEEN 430 PM AND 6 PM. THE SNOW WILL DEVELOP ACROSS RHODE ISLAND...COASTAL AND SOUTHEAST MASSACHUSETTS BETWEEN 630 AND 8 PM. ONCE THE SNOW BEGINS IT WILL QUICKLY BECOME HEAVY...FALLING AT THE RATE OF 1 INCH PER HOUR AND REDUCING VISIBILITIES TO UNDER ONE HALF MILE. ROADS WILL QUICKLY BECOME SNOW COVERED AND TRAVEL WILL BECOME QUITE HAZARDOUS BY MID TO LATE EVENING. THE SNOW WILL THEN CHANGE TO SLEET AND THEN TO FREEZING RAIN BETWEEN 11 PM AND 1 AM ACROSS CONNECTICUT AND MUCH OF RHODE ISLAND. ACROSS EASTERN MASSACHUSETTS...THE SNOW SHOULD CHANGE TO SLEET BETWEEN 1 AND 3 AM. A PERIOD OF FREEZING RAIN IS THEN EXPECTED JUST INLAND FROM THE COAST TOWARD MORNING. THE PRECIPITATION SHOULD HAVE CHANGED TO RAIN BY 6 OR 7 AM ALONG AND SOUTHEAST OF THE I-95 CORRIDOR AND IT MAY BE FALLING QUITE HEAVILY. HOWEVER...THERE STILL MAY BE SOME POCKETS IN THE CONNECTICUT VALLEY WHERE FREEZING RAIN MIGHT BE FALLING. ANY MIXED PRECIPITATION WILL CHANGE TO PERIODS OF HEAVY RAIN BY MID MORNING AND CONTINUE THROUGH THE AFTERNOON. URBAN AND POOR DRAINAGE FLOODING WILL THEN BECOME A BIG CONCERN. BEFORE THE CHANGE OVER TO RAIN...SNOW WILL GENERALLY ACCUMULATE 2 TO 4 INCHES ACROSS THE REGION. A WINTER WEATHER
Re: [Boston.pm] Reminder: Tech Meeting, Tuesday, February 12, at MIT
Well, I'm one of the foot-masses who takes pub. transportation, so I'm planning to be there. Beg your pardon Bobbi + Ron. *Pedestrian conditions on sidewalks to and from the (T) can get Hazardous as well*, Especially if there's direct ice (freezing rain, ZR), although that *may* be only further inland on latest forecast. The Red Line *may* well continue running between Kendall / Charles-MGH -( icing *has* stopped the Red Line on SaltPepper bridge over the Charles River )- which the Speaker (DoctorMO) and I ?and Bobbi? would use to get home by public transit. [And don't mention buses. They slide wonderfully.] With either my hiking gear or my evil 4WD fuel-guzzling monster I should be able to there and back with moderate safety. But should I as a father/provider take the increased risk myself? When I already have wrist injuries and my truck started the day on a tow-truck? Should I advise it to anyone else? Anyone coming from INLAND portions of Middlesex or beyond, under a WARNING, definitely not! Anyone closer, still likely not. Responsible parties are cancelling evening activities http://wbztv.com/schoolclosings http://www.thebostonchannel.com/closings/index.html I doubt I'll get there -- sorry Martin. = Bill http://weather.gov/box or time-tagged official text products via unofficial EDU channel - http://kamala.cod.edu/ma/ Winter Weather Product 251 PM EST Tuesday, February 12 http://kamala.cod.edu/ma/latest.wwus41.KBOX.html Zone Forecast Product 334 PM EST Tuesday, February 12 http://kamala.cod.edu/ma/latest.fpus51.KBOX.html ZONE FORECAST PRODUCT FOR SOUTHERN NEW ENGLAND NATIONAL WEATHER SERVICE TAUNTON MA 334 PM EST TUE FEB 12 2008 MAZ014-130915- SOUTHEAST MIDDLESEX MA- INCLUDING THE CITIES OF...CAMBRIDGE...LEXINGTON...NEWTON... WALTHAM...WOBURN 334 PM EST TUE FEB 12 2008 ..WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM EST WEDNESDAY ...FLOOD WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING... TONIGHT...SNOW UNTIL JUST AFTER MIDNIGHT THEN SNOW AND RAIN LATE. SNOW ACCUMULATION OF 4 TO 6 INCHES. LOWS IN THE MID 20S. SOUTHEAST WINDS 10 TO 15 MPH. CHANCE OF PRECIPITATION NEAR 100 PERCENT. **Boston** the same except 3 TO 5 INCHES / 5 TO 10 MPH... ...FLOOD WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH THURSDAY MORNING... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Edward Tufte in Boston this March
I think I enjoyed Tufte's seminars more in the early days, but the 4th book is good and I think it's worth hearing some of the same old anecdotes again. I don't mind getting extra copies, as I don't keep my first edition Tufte at the office. So I won't have a volume 4 at the office until I attend the volume 5 tour. His road crew puts on a quality event. Last time I saw him, Boston Park Plaza ballroom was a better fit than his prior venue of Fairmont Copley Plaza the book before. I took my boss last time, he enjoyed it too. If you don't have 4th book, and only have one or fewer copy of 1-3, do it. Bill, typing with thumbs - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: Bob Rogers [EMAIL PROTECTED] Cc: Boston Perl Mongers boston-pm@mail.pm.org Sent: Fri Jan 25 20:16:27 2008 Subject: Re: [Boston.pm] Edward Tufte in Boston this March On Fri, 25 Jan 2008, Bob Rogers wrote: Edward Tufte is coming to Boston on March 3, 4, and 5 to give his famous one-day course [1]. I've never been to one myself, but I've heard (including at Boston.PM meetings) that's it's really good -- and the books speak for themselves. When I showed the brochure to the CEO, his eyes lit up. So not only is our entire software development team going to attend, plus maybe some of the scientists, but the CEO may come too. E I have the first three books, and I *really* like them. (I only found out recently that there's a fourth one now, which I don't have yet, but I imagine I'll like it too once I get a copy.) I went to the seminar he gave in Boston a few years ago (2003?), and was underwhelmed. I really wanted to like it. It was impressive to see the actual physical examples he cites in the books (text from Galileo, etc). But he also spent most of the time just reading the books to us, with kind of a gee aren't these great air. Which they are, I'll grant, but I was hoping for a bit more than that. Then he spent an hour or so showing us piles of metal in his yard. Great glorious photos of pillars of twisted gleaming steel. Don't ask why. If you haven't read the books, you'll get a lot out of the seminar. If you've read them, you'll get the re-read to you. Oh and you'll get another copy of the books. So there's that, too. I'm glad I went, once, but was underwhelmed overall :-/ -- Chris Devers DO NOT LEAVE IT IS NOT REAL ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] topic for meeting - perl 5.10?
Great! I've linked the good slide decks from Advent Calendar. If I remember I'll bring alternate Ethernet interfaces for Ronald's laptop ... Bill, typing with thumbs - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: boston-pm@mail.pm.org boston-pm@mail.pm.org Sent: Tue Jan 01 19:19:48 2008 Subject: Re: [Boston.pm] topic for meeting - perl 5.10? On Friday 21 December 2007 12:48, Uri Guttman wrote: what about perl 5.10 as a topic for the next meeting? I am rewriting my little CD ripper program (geared toward people who care about audio metadata more than the average guy, especially those with large collections of classical music), and had reached a point where I was running out of lazy options to implement the functionality I wanted. Especially for track title parsing, where 5.8 regexes were not cutting it, I was considering options like wrapping the matching code in (ugly, non-generic) logic, or using Parse::RecDescent or even some flavor of Perl 6 regexes (Perl6::Rules, kp6, etc.). With named backreferences/captures, and named patterns, things are suddenly becoming much easier and satisfying. I can also see places in the code where other 5.10 features will be useful, like the switch statements, say or others. So I will have some real code to show by January 8th, both for illustration and for critique, perhaps worth a half hour of discussion. In truth, with all the new regex functionality we could fill a couple of meetings easily. Just how much code I will have is not clear, because with two brand new babies at home, things are very unpredictable, and some days I get absolutely nothing done besides mere survival, heh. But I have already implemented a complete basic grammar for classical music titles that uses named captures, and have also run into a couple of issues that could be interesting to discuss. Bernardo ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] converting utf-8 to unicode from XML text gathered byXML::Twig
Suggest Break into 2 problems. 1) Check the unicode/utf faq for perl5888 or whichever as appropriate. (Perldoc.perl.org). Sound like for you use you have multibyte chars being handled as 1-byte chars because it was read or forced raw at one ponit. 2) If not fixed by reading differently, to fix a string with these chars as you'd like. either (2a) do (1) before twig parses OR (2b) have twig apply it inplace to each element/text() you're extracting, and also any attributes you're keeping. Bill @ XML2007 / Bill, typing with thumbs - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: boston-pm@mail.pm.org boston-pm@mail.pm.org Sent: Wed Dec 05 14:21:55 2007 Subject: [Boston.pm] converting utf-8 to unicode from XML text gathered byXML::Twig Hi All, I am currently using XML::Twig to read in some XML. This XML's text is in utf-8. So there are smart-quotes and such in there. I need to unicode-ify the text. I tried using most of the methods that are part of XML::Twig, but came up dry. The best I could do is convert all unsupported chars to question marks. Without any XML::Twig conversion the smart quotes come out looking like: “ ” or ’ I tried doing a simple $val =~ s/’/'/gs; But that didn't work either. Does anyone have any suggestions on how I can do this conversion either manually OR with XML::Twig methods? Thanks. --Alex ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Tech Meeting, Tuesday, October 9, at MIT
Ronald investigated liverpole's Tk JAPHs. Jerrad asked for more writers for the Perl Advent calendar. Bill Ricker, typing with thumbs ... - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: L-boston-pm boston-pm@mail.pm.org Sent: Sat Oct 13 18:54:51 2007 Subject: Re: [Boston.pm] Tech Meeting, Tuesday, October 9, at MIT Ronald J Kimball wrote: Boston.pm will have a tech meeting on Tuesday, October 9, at MIT, in building E51, room 376 (directions below), starting at 7:15pm. I do not have a speaker lined up for this meeting. I missed this meeting. Anything interesting happen? -Tom -- Tom Metro Venture Logic, Newton, MA, USA Enterprise solutions through open source. Professional Profile: http://tmetro.venturelogic.com/ ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Subroutine definition
Am I reading this right? Are you actually defending the lowest common denominator of language design? The paragraph above Not language design but coding in an appropriate subset. English and Perl are both special because TIMTOWTDI. My personal toolkit at the office is a more HOPish style than things I turn over to Production Support, and my home scripts are looser dialect yet - just as my English dialect is freer with friends than with VPs or Grandmothers, IM looser than email than Memo. Nor do I use the full range of literary English vocabulary in multiethnic business context Inside a do not touch magic module, map away. In code for yourself or for Perl Monks, to show the power of the language, map away. In code to be maintained by low cost corporate maintenance programmers, the the readable subset is responsible to your customer. A corporate style guide based on Damian's PBP may well restrict 'map' usage to specific well understood cases - or may assume all new hires are issued a copy of Dominus's HOP. But it should choose, and be consistently observed. Bill Ricker, typing with thumbs ... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] refactoring tools and IDEs
Asking everyone who's used any perl ide to share could be a stone-soup meeting sometime. A good programmer's editor that can colorize syntax and autoindent and hop to matching or enclosing braces is half the battle. Most of us who don't use ides have that. A graphical debugger front end *is* nice. I used O'Reilly's original one (pre Komodo), it really helped on certain issues. (It's a gentle introduction to the perldb too, same as gdb is to dbx - but likewise, you have to eventually fully grok the line oriented db to get full benefit from the graphical db)). But so many of my scripts wind up being run via SSH that I don't really miss it when I could *actually* use it. Bill Ricker, typing with thumbs ... - Original Message - From: [EMAIL PROTECTED] [EMAIL PROTECTED] To: L-boston-pm boston-pm@mail.pm.org Sent: Thu Aug 16 01:00:52 2007 Subject: [Boston.pm] refactoring tools and IDEs http://www.sdtimes.com/fullcolumn/column-20070815-01.html ...Ruby’s growing up. Although not fully mature compared with languages such as C# and Java, there now exist some solid Ruby IDEs. ... Obviously, I like Ruby. I recommend it without hesitation for administrative tasks and small projects. However, as with any relationship, there’s a difference between casual and committed. This was my first project approaching what I consider real application size - rapid development of several thousand lines of code in dozens of classes and the inevitable contortions of logic and data that define programming in the real world. ... In general, the lack of refactoring support in the IDE was an acute pain point compared with developing in, say, C# with ReSharper. While we Perl developers tend to scoff at those who use IDEs, I often wonder if we're missing out on a productivity boost as a consequence of using a non-mainstream language. (Of course there are IDEs for Perl. Several. Though you rarely hear them recommended by Perl developers. And I'm left wondering whether they really offer a complete enough implementation of modern conveniences to provide the same kinds of productivity boosts developers of other languages get from their IDEs.) On the other hand, those of us who have successfully worked on numerous 10K+ line applications in Perl with nothing but a text editor (and of course UNIX command line tools, including Perl itself, which come in handy for certain refactoring operations) might consider the authors stance to be a tad wimpy. -Tom -- Tom Metro Venture Logic, Newton, MA, USA Enterprise solutions through open source. Professional Profile: http://tmetro.venturelogic.com/ ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Social Meeting in August
Thank you for doing your civic duty. How well does john Harvards handle groups? --Original Message-- From: Jerrad Pierce To: boston-pm@mail.pm.org Sent: Aug 16, 2007 1:17 PM Subject: Re: [Boston.pm] Social Meeting in August If CBC I recommend the patio. If BBW why Fenway? Canal Street is a stone's throw from North Station, and pretty nice from what I saw when I unsuccessfully tried to make patio reservations awhile back. Another brew pub in the area is John Harvard's in Harvard Square. It's a but yuppity, but has a geek-friendly basement venue :-P And a list: http://www.realbeer.com/destinations/boston/breweries.php -Just-back-from-jury-duty Jerrad -- Free map of local environmental resources: http://CambridgeMA.GreenMap.org -- MOTD on Pungenday, the 9th of Bureaucracy, in the YOLD 3173: 'scuse me while I tend to how I feel... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm Bill Ricker, typing with thumbs ... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] refactoring tools and IDEs
Yeah, ActiveStates' early debugger and AS Perl were bundled with the OReilly Perl windows boxed set on a CDr. --Original Message-- From: Andy Oram To: Tom Metro Cc: boston-pm@mail.pm.org Sent: Aug 16, 2007 2:20 PM Subject: Re: [Boston.pm] refactoring tools and IDEs Regarding this detail: A graphical debugger front end *is* nice. I used O'Reilly's original one (pre Komodo), it really helped on certain issues. O'Reilly or do you mean ActiveState? I believe ActiveState developed it early on when O'Reilly was one of the company's funders. Easy to get mixed up. Andy ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm Bill Ricker, typing with thumbs ... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] HTML parsing
It's been a few years since I looked at Xpath,
but I seem to recall that
it was originally inspired by SQL.
If that's correct, that doesn't
strike me as being very RegEx-like.
I think you're thinking of XQuery. XPath is more RE-li[tk]e.
But if I want to find the text inside B tags that happens to occur
before a comment tag containing a specific string, it may not be
possible to encode that in one query. But I haven't looked into it
yet...
I'm not sure how XML::Twig's XPath-like patterns or real XPath feel
about comments.
(They might not see them at all, since they're non-semantic.)
With screen scraping, you're just as likely to get semantic hints from
the ordering of tags as you are from the ancestry.
True enough, although that's anathema to XML. For such bad HTML, you may
have to resort to Perl Cookbook Recipe 20.18 but perhaps with
HTML::TokeParser::Simple (instead of HTML::TokeParser).
Be sure to read
http://search.cpan.org/~ovid/HTML-TokeParser-Simple-3.15/lib/HTML/TokePa
rser/Simple.pm
under the is_comment() function. (Uses HTML::Parser or HTML::PullParser
under the hood, see Caveat section. You can use HTML::PullParser
directly to define your own token classes.)
Alternatively, Regexp::Common is frequently useful for parsing hard
things, but it only has $RE{comment}{html} so far, alas, the promised
Regexp::Common qw/html_tags/; has not been done yet.
And as with
traditional regular expression techniques for extracting data, you
often
want to find the last X that occurs before a Y, or other ordering
relationships, ignoring other aspects of structure in the document.
That used to be true. In the modern DIVSPANCSS world, you're
starting to get semantic markup in the CSS class/id attributes of the
DIV SPAN or other tags ... Which XML::Twig can match.
language, that contains directives for not only indicating
parent-child
relationships, but also can also operate on the document as simply a
stream of tags,
That may be beyond XPath. By design.
-- Bill
Aka N1VUX etc
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[Boston.pm] XML::Twig does HTML RE: HTML parsing
Tom, It seems like what is missing is a module that provides a regular-expression style language for matching against tags. It would make screen scraping tasks almost trivial. Anyone know of a module like this? What's your favorite HTML parsing module? XML::Twig is the grep for XML (and bundles with xml_grep(1)). With it's new parse_html() option, XML::Twig will use Tree::Builder for you to convert HTML to it's internal rep of XML, protecting you from Tree::Builder's interface. You can make reg-ex-like Xpath-like queries on the HTML document with it and let it's pattern engine walk the tree looking for twigs that match your query. It supports an Xpath-like query language. http://search.cpan.org/search?query=XML-Twigmode=dist Which references The XML::Twig page is at http://www.xmltwig.com/xmltwig/ It includes the development version of the module, a slightly better version of the documentation, examples, a tutorial and a: Processing XML efficiently with Perl and XML::Twig: http://www.xmltwig.com/xmltwig/tutorial/index.html Which has useful summary http://www.xmltwig.com/xmltwig/quick_ref.html [but read tutorial first]. It can work in either a stream/call-back-handler mode or a parse-then-search mode, and can work as a XML-aware SED (with inplace option!), can preserver or change encoding, etc. A very perl-friendly way to deal with XML. CAVEAT -- I haven't tried this new html-happy mode yet; I've wished for it in the past, when XML::twig rejected HTML that wasn't highly XHTML well-formed. Now with this new option, it probably accepts anything H:TB does and pretends it read a conformant XHTML document. I've got to try this too. -- Bill / n1vux Not speaking for the firm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] OLE, excel, and perl
A file named VOPU.xls already exists in this location. Do you want to replace it? Yes/No/Cancel. As for the why part, I couldn't say. SAMBA is straddling a cultural divide. Oddities like this are to be expected. When it's open from the Unix drive, Excel apparently can't tell that it's the file it has open. Since WINDOWS routines have canonicalizers that don't know from Unix, this isn't terribly surprising. Is the case correct? Given Unix is case-sensitive and Windows isn't, it may be IMPOSSIBLE to have case correct ! Does it work if the file is vopu.xls? Or VOPU.XLS ? If originally created/named from Windows? From Unix? You could SAVE AS $filename=~ s/(\d*)[.]/++$1.'.'/e; to avoid this sort of problem. If you used the modules Andy mentioned, you could run the script on the Unix side. Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] 64 bit perl boost?
At work, the 64bit Power4/Power5 IBM AIX systems come with 32-bit Perl. After reading the README, I wasn't interested in building everything in 64-bit, so when I build a Perl to build DBI with, I build it with similar settings to the vendor's (unsupported, contributed) 32-bit Perl. If one of my users needs more than 4GB address space in a DBI script, I'm going to suggest a change of algorithm might be in order! Does your app spend a significant amount of its time splitting huge numbers into 32-bit chunks so it can cope with them? This would likely be indicated by using Math::Big[Something] packages. Or, do you have a lot of FLOATING POINT math, such that you are or should be using PDL, the Perl Data Language? Do you need the longer floating point registers, assuming your platform's 64-bit mode has longer such? On my home machine -- nothing to do with work -- I have 64bit Perl since that's all that's available with Debian Alpha. I'm going to try some PDL on it. LIMITS -- As near as Google can tell, the limit on 32bit is 2GB for filesystem (signed numbers! Fie!), 4GB for process memory (unsigned, yeah!). http://www.google.com/search?hl=enlr=q=Perl+32-bit+2-GB+OR+4-GB+x86 (Perl6 may have a 2GB limit on the bytecode file in 32bit, but program ought to be LESS than half your address space or you're in trouble enough already!) Bill Ricker Member, Boston.PM NOT speaking for the Firm. ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] version of perl that can use scalar filehandles
more importantly, what is the syntax for passing a filehandle
into a routine if it is FILEHANDLE instead of $FILEHANDLE?
open(FILEHANDLE, $filename ) or die trying $!;
open(my $fh, filename);
Autovivification of unitialized scalar filehandles was added in 5.6.0
http://search.cpan.org/~nwclark/perl-5.8.8/pod/perl56delta.pod
QUOTE
File and directory handles can be autovivified
Similar to how constructs such as $x-[0] autovivify a reference, handle
constructors (open(), opendir(), pipe(), socketpair(), sysopen(),
socket(), and accept()) now autovivify a file or directory handle if the
handle passed to them is an uninitialized scalar variable. This allows
the constructs such as open(my $fh, ...) and open(local $fh,...) to be
used to create filehandles that will conveniently be closed
automatically when the scope ends, provided there are no other
references to them. This largely eliminates the need for typeglobs when
opening filehandles that must be passed around, as in the following
example:
sub myopen {
open my $fh, @_
or die Can't open '@_': $!;
return $fh;
}
{
my $f = myopen(/etc/motd);
print $f;
# $f implicitly closed here
}
/QUOTE
5.6.0 also added 3-arg open($fh, $mode, $filename) for better safety
against injection etc.
Which means 5.5.x was the version that couldn't.
-=- Bill
Not speaking for the Firm.
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Re: [Boston.pm] Running shell commands with specified user permissions
I believe you'd want $ , the effective uid. Probably. See $ perldoc perlvar or http://perldoc.perl.org/perlvar.html under $REAL_USER_ID and $EFFECTIVE_USER_ID, but also see $REAL_GROUP_ID $EFFECTIVE_GROUP_ID, you may need to set that too to get the desired effect.See also POSIX::setuid() http://perldoc.perl.org/POSIX.html#FUNCTIONS If the script is running as Root, particularly but not limited to Setuid'd, be sure to set the -T taint flag and un-taint all your external arguments. perldoc perlrun perldoc perlsec http://perldoc.perl.org/search.html?q=taint (If not running as root, you can't change user anyway.) Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Class::Agreement slides, etc.
Thank you all for your valuable suggestions. Speaking of suggestions, the Data::COW the Copy-on-Write principle-of-least-work cloning utility that Jarrad mentioned is today's Advent Calendar gift. (15, the window just above the Llama's tail.) -- Bill / N1vux ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Class::Agreement slides, etc.
Ian,
This is a bittersweet review for this old hand at reasoning over program
assertions. There's more to the PIP-condition assertions than Contract
programming. Similar annotations can be used for program proof of
correctness.
I'm probably one of the few programmers you'll meet that's actually more
than once proven a program correct in anger at $DayJob. (There are
others, I'm sure, but most are classified, so if you meet them they
can't tell the war story -- but one of mine was live on the WWW in our
MedLine search's ad-server function:
http://web.archive.org/web/19970126214107/www.avicenna.com/tour/etour4.h
tm ) I was trained on Ottawa Euclid for mythical A2 level security, with
software proof assistance, but my in anger usages were in C, using
comments and a #2 pencil for proof. Once a decade I find a loop that
will be too nasty to debug by usual techniques and really needs to be
coded right the first time ... so I do a Dijkstra/Hoare loop invariant
analysis to compute the post-condition from the pre-condition and the
invariant behavior.
Note that my practical use is the reasoning *over* the assertions, not
the checking of them at run-time. This does not need to involve class
invariants or function/method precondition/postcondition, but rather the
loop-invariant/pre/post. As far as I can tell, your Class::Agreement
while supporting functional agreements in addition to OO does not
support loop pre/inv/post unless I switch to recursion?
When doing the real code-to-spec proof as I've done, you don't need to
run the assertions in production forever. The assertions should be
checked in test to verify that the code really does agree with the
assertions, but the reasoning over the assertions is the real validation
of the algorithm. When the invariant of interest is on each pass of the
inner loop, you really do want it OFF in production.
An object invariant that I've seen in vendor-supplied framework code
(and we saw it assert, too) is the equivalent of
invariant { is_sorted( $self-data ) }
which is a little expensive (*merely* O(N)) to call twice around each
method call and prohibitive (O(N**2)) on recursive method calls. Part
of the behavior of operations maintaining a linked list or balanced tree
is that the list/tree stays sorted if it starts sorted. If there isn't
a way to shut off contract enforcement efficiently, can it really be
applied to interesting ordered datastructures of the sort that really
need assertions?
As I mentioned in reply to a question/comment last night, examples like
the postcondition for a factoring routine ( product(@$result)==$input)
and the above invariant on an ordered list/tree, might help show that
postconditions aren't just re-doing the implementation in general, but
checking the visible behavior of it without doing the full
implementation (when interesting enough that there is a difference).
Cheers,
-- Bill / N1VUX
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Re: [Boston.pm] Pretty Graphs with Perl
Does anyone who has/does use GD::Graph know if there's an easy way to
embed the output graphs into HTML.
Basically I'd like to be able to print a bunch of HTML, then the
graph,
then some more HTML.
[WDR] The basic techniques are to either
(a) img href=../graphs/123456789.png
Generate the graph to a 2nd file named with a random number (for
security) or a serial number (if no security needed)
my $thisgraph; # uniq name
$this_graph = sprintf %s/%d.png, $graphdir, rand($bignumber)
while -r $thisgraph;
print qq{img href=$this_graph size=$normal_size};
put_to_file($gd-png(), $this_graph);
where put_to_file is something like (from GD::Image png method
notes)
sub put_to_file {
my ($data, $fn)[EMAIL PROTECTED];
my $fh;
open $fh, $fh or die;
binmode $fh;
print $fh $data or die;
close $fh or die;
}
(b) img
href=/scripts/imagemaker?x=17y=42title=%22Foo%20Bar%22xname=Xyname=
Y
Put the code that decides what to do from the Request in a module, and
call it from both the CGI or action module that generates the HTML page
(which generates the img link) and the CGI or action module that
generates the dynamic graphic (in response to the img link). Some
amount of setup work (varies with app) would have to be redone or saved
in DB or some other place (with unique names!), but at least the code is
reused in a module. In this case, you put all the request parameters
that the graph module needs on the IMG URI, or copy all the request
parms to be safe if you don't know; since it's a module, it should know.
One module, one script could do both Page and Image requests, with a arg
difference (or HTTP context wanting text/html or image/*?) determining
which to generate.
A has efficiency advantages in that any shared setup work for the page
and the graphic is done once.
B allows someone to statically deep link or bookmark an image.
B has efficiency advantages if page is likely to be fetched by Lynx or
WWW::Mechanize or spiders who will never fetch the image.
B has efficiency advantages if the pages will be fetched through Akamai
or client proxies, and multiple users may request the same image -- so
the image will be cached outside your server -- dont' recreate it if you
don't have to; this doesn't apply if everyone is local or every request
is unique.
etc ...
Bill n1vux
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[Boston.pm] threads RE: Combinatorics (in threads)
in separate threads, Threads in Perl are sufficiently treacherous I don't use them. See Dan's comments on the last thread thread. bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Permutation with Replacement considered harmful RE: Combinatorics
I did not know you were a mathematician =) Yup, trained in theory. This computer stuff is just applied math, With not as much math as I'd like most days, but the pay is better. :-) (I wasn't even the only Boston.PM member at the NES MAA section meeting last weekend. http://www.southernct.edu/organizations/nesmaa/fall2005meeting.html ) On The terminology point you mentioned, I must squarely place the blame of the choice of words on the way Discrete Math is taught these days. Standard texts refer to Permutation, Combination, Permutation with Repetition, and Combination with Repetition. Ahh. I guess Google Books hasn't gotten to those texts yet. I didn't take a close look at those texts the last time the Math conference had textbook vendors. I hope Don Knuth's Concrete Math book hasn't taken that linguistic shortcut ... but perhaps that's the brave bold future. *sigh* If you have any hope of rectifying the issue, I recommend you look at the relevant wikipedia page and submit corrections. The module author has invited me to send him a diff file to update the pod. I'll probably do that from home on my own time. I submitted comment to MathWorld comment page (it's not a Wiki per se, it's managed content). at hand - the module. In my explorations of it, I have found that it leves a bit to be desired in terms of performance -- generating the 65k striungs possible in the (a b c d) alphabeth takes 10 minutes, That's not much better than my naive HUMOR generate-filter! I do not want to add frequency information, every symbol is equally likely for me, In which case the module's implementation has a *lot* of overhead you don't need. If the module generates the whole set and that gives it out on the next options, it's a poor iterator implementation. and I would like to code up this in a way that (a) is thread friendly, Issues there ... see below and (b), more importantly, is memory efficient, which the module is not. Since you say this, you do need a LIST of all the options, so a pure iterator would do? The optimal solution is probably in MJD's Higher Order Perl, available at Barnes Noble, Quantum, Borders -- and (is or will be?) online for free-as-in-beer. (And cut-and-paste!) http://hop.perl.plover.com/ (Just don't buy it from Amazon, that would be an insult to the author ... see his website to understand.) Be careful on making the iterator thread-safe ... but an iterator should be easier to make thread safe than a memory hog, as long as you do the critical section right. http://perldoc.perl.org/perlthrtut.html Alas, MJD's book only uses the word threaded once, in a non-technical sense. I need to figure out a way to do it w/o using great amounts of ram, HOP. You want an iterator. He has iterators for general functions and he has functions for permutations, probably has iterators for permutations. http://hop.perl.plover.com/grep.cgi?q=permutation http://hop.perl.plover.com/Examples/ Scroll or search for permut what would a Combination with Repetition be called MathWorld.Wolfram.com Ball Picking page says it's MultiChoose. So I guess that's it's ugly name. Happy Thanksgiving, Bill aka n1vux on use.perl.org ... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] Permutation with Replacement considered harmful RE: Combinatorics
Federico, Please pardon my pedantry here. No flames are being directed at you ... I think you've found the tool you said you needed, but there's a terminology problem in the module and the discussion thread that this old mathematician dearly wants to babble on about. Anyone who wants to avoid the pedantry can scan to the next /PEDANTRY tag to pick up the tale. There's also one serious error in the POD examples for a method other than the you mentioned that is worth checking, see WARNING at the end, just before the HUMOR. PEDANTRY Level=1 I'm glad to see Math::Combinatorics POD links the MathWorld [http://mathworld.wolfram.com/] site for definitions, but I'm not satisfied with the module's symbology or terminology. [http://search.cpan.org/~allenday/Math-Combinatorics-0.08/lib/Math/Combi natorics.pm] The best point of departure is http://mathworld.wolfram.com/BallPicking.html . As usual, I managed to mix things up. What iI am looking for are *Permutations* (_with_ repetition, that part I managed to write right). That certainly got your meaning across. However, calling what you want a Permutation with replacement or Permutation with repetition is a regrettable neologism, although understandable from the examples you're looking at. This neologism was apparently inserted into a key reference work in the mid 1990's and has been slowly spreading since then. It does NOT appear on the generally excellent Wolfram site cited above. Where the author of the module found the nPRk symbol (and not the P^R(n,k) alternative) in analogy to nPk I don't know, apparently that too is in vogue in applied maths somewhere *shudder*, but that did not come from Mathworld.Wolfram.com. I hope it's not too late to stamp it out. The proper name for this in classic probability was Ordered Sampling from an Urn with Replacement; in modern linguistic combinatorics, it's more simply a String, as you've found. BTW, Replacement is a better word than Repetition, since it is allowed (randomly) to NOT repeat symbols from the alphabet, if the string size is shorter than the size of the alphabet. (I'm startled that MathWorld uses Repetition on their Ball Picking page -- I'm posting that as a comment on their page!) PEDANTRY Level=2 A Permutation is an order-sensitive sampling, *without* replacement, typically to exhaustion of the set, of a set (unique members of equal probability). [http://mathworld.wolfram.com/Permutation.html] The number of such Pn = n!, the factorial of n. Thus, a true permutation has the same length as the set or bag it's taken from; has multiples only if the urn, set or bag does (in which case the urn is modeled as a bag but not a set). nPk which is normally and better read N pick K, not n Permute K, is the non-exhausting variant of permutation, giving a prefix of a permutation. nPk= n!/(n-k)! . In classical probability, is ordered sampling of uniquely labeled balls from the Urn without replacement. One can also do ordered non-replacement sampling of 6 red and 4 white balls, but that's not called permutation. A Combination is an order-INsensitve sampling without replacement that doesn't exhaust the set. (If it exhausts it, since it's not order sensitive, it's boring ... 100% of the time, it's the same as you started with.) [http://mathworld.wolfram.com/Combination.html] I suppose I should be happy Math::Cominatorics pod only uses the nPRk symbol that some may recognize, and doesn't call it Permutation with Repetition or Replacement in the Pod. But since it returns instances of the permutation set, not the count of the permutation set, the use of the nPRk (and !n and nPk etc) symbols seem out of place to me anyway. Having optional Frequency available for Permutation and Combination voids the relevance of the nPk=n!/(n-k)! symbols in the POD. /PEDANTRY Math::Combinatorics does provide such method, it is called strings() Yes, it seems that a String is what a modern combinatorist speaking properly would call what you want. [http://mathworld.wolfram.com/String.html] In particularly, you said Character Set, which suggests you *might* want not only repetition but weighting of some members over others. Classically, that would be a feature of Strings, but only on extended permutations and combinations. Since the M:C String has frequency, a old-school statistician might call it a ordered sample with replacement from a mixed urn of several varieties. PEDANTRY LEVEL=2 An Alphabet with weights on the symbols, the weights being either Integer or Rational, is totally equivalent to sampling with replacement from a bag (or Urn), with the multiplicities being integers (to which rationals can be converted using 5th grade LCD). Classical Permutations and classical Combinations can be extended to handle multiplicities, so for M:C to speak of Permutations with optional frequencies is not unreasonable. A string from a weighted alphabet is no more general than ordered sampling from a bag, unless irrational
Re: [Boston.pm] Fwd: parrot now available as a Debian package
* [55]parrot -- Virtual machine to execute bytecode for interpreted languages. Cool! I'd missed that line. Maybe I should download it and test it on DEC-Alpha, there probably isn't a tester there yet ... :-) Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] damian topic
MW Memoize::ITU3X, Manifest::Constants, and Time::Space::Continuum URI i don't WANT any of those on cpan! :) I can see plausible uses for Memoize::ITU3X :-). Manifest::Constants could actually be useful in a bondage-and-discipline style corporate, so I'm a little surprised that one hasn't been released. If I were building a business on Perl logic, like an eBay, I might want this module. MW he also mentioned Lingua::LinkParser, the one that created MW sentence diagrams, which is on CPAN URI i recall damian said that he didn't write that one URI but used it for his parser classes It drags in a lot of meta-data. Quite a big project. I need to play with it sometime ... Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] XML::Twig RE: XML::XPath
How do I pull out multiple KEYWORDs from this XML file using this style code? [Example with XML::XPath omitted] I prefer XML::Twig's variation of XPaths, which allow Perl regex matching too. http://search.cpan.org/~mirod/XML-Twig-3.22/Twig.pm http://xmltwig.com/xmltwig/ I used it yesterday to solve a problem that XSL and XPath query couldn't do from Java. Bill -- Not speaking for the Firm. ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] damian topic
Damian voted for Small Miracles, so I think it's 15:2:1. ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] damian topic
Could someone who has heard this talk before elaborate on what it is
really about?
'Uri' may be the only value for
grep {$Heard_by{SmallMiracles}{$_}} @[EMAIL PROTECTED]
as it's only been done at YAPC::NA::2003 and a couple of *.PM's that are
probably further away.
As with all non-Perl6 DamianTalks, it will be amazing perl tricks of
some sort. Unclear if it will have less of a theme or less of a strange
theme than the others.
If Uri doesn't answer, I'll ask Damian at Lunch for a better tease ...
Bill
Sitting in back of Damian Class
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Re: [Boston.pm] damian topic
Could someone who has heard this talk before elaborate on what it is really about? Thanks John for the Toronto review. GOOGLE IS YOUR FRIEND. For those who haven't visited http://damian.conway.org/, the official description is In 2003 Damian arrived at the YAPC::NA conference only to be told that he had to give both keynotes, rather than just the one he had prepared. Oh, and we need you to present the extra one this time tomorrow. Ever wondered what you'd get if you locked Damian in a hotel room for 24 hours with nothing but a perl interpreter, a deadline, and a dozen PowerBars? This talk reveals the ten terrifying answers. Tim Maher plugged SPUG edition (first PM rendition) as - We'll be privileged to be the 2nd group on the planet to hear Damian's latest blockbuster talk, in the Quantum Superpositions, Life, the Universe, and Everything, and Time::Space::Continuum series. As usual, this will be a meeting you won't want to miss! Toronto glossed this talk as 'a characteristic Damian crazy talk' and This talk is one of Damian's special talks -- hyperkinetic and humorous while at the same time very technical and educational. Buffalo.PM called it (in Toronto) the (semi) insane talk to distinguish it from the (semi) serious talk on Perl 6. A KW.PM member reviewed the NY.pm showing of Small Miracles as I was able to catch Damian's Small Miracles talk on Tuesday in Manhattan(thanks to NY.PM). Its quite interesesting and definitely very entertaining. It gives a good explaination about what Junctions are among other things. It essentially covers 9-10 modules that he has written at some point or the other. No overlap between his two YAPC talks (other than the YAPC::Australia thing which is just a filler.) I hear from Merlyn that it includes IO::Prompt and progress bars (probably Smart::Comments). -- Bill Sitting in the back of Damian's REGEX class... ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] damian talk?
Uri Said on-list, URI now that we have the social meeting scheduled, we do need to pick the URI date (and get a larger room) for damian this coming week. URI my guess is Tuesday or Wednesday would be best and I would prefer wed. Damian said off-list, DC I'm available Tuesday, Wednesday, or Thursday evening DC (early start please). I'm CCing Damian so he can be in the loop here ... William Ricker Principal Consultant (swe/dev), Architecture Technology Fidelity Investments / FPCMS / Systems * 617-563-0648 * M/S Z1E * [EMAIL PROTECTED] * 1141547 Skytel ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] brian d foy is in the neighborhood
Oops. Misread on my part. Not entirely, John aka jmm said he was in H-ton in the same thread at same Co, but different site. Like us, they're a network in several senses ;-) Metro-west all blends together. This is a known phenomenon among those dwelling inside 128, along with strange asymmetric metrics of space-time. While those outside 495 wonder why the statehouse forgets about them entirely. The somewhere out there or the somewhere in town question still holds. How far he wants to travel would seem to be a question for brian to answer, not for us. Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] DBI connection to an Oracle db
Do we need this installed? Probably. I don't think you can even build DBD::Oracle without having the Oracle client libraries on the machine. Indeed. See Tim Bunce's recommendations on building DBI and DBD::*, or the DBI bundle README file. Tim recommends building Perl from sources, then DBI and DBD::* in sequence to ensure that things link just so. http://search.cpan.org/src/TIMB/DBI-1.46/README http://dbi.perl.org/ Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Combining the nodes reachable in n steps from a web page into one printable file
I didn't notice or use a bundle. CPANPLUS will handle dependencies they say, but I just kept grabbing modules until it shut up. # 1. What might cause IO::Socket::INET-new to fail? # I *am* directly connected to the Internet, so the first warning is probably caused by a proxy problem. No, you are not directly connected. ( Try a traceroute to find out just how indirect you are ;-) Assuming this is on the FMN internal network, you are on a private NAT'd subnet whose firewall/gateways require proxy connection for port80 traffic. So yes, you do need to set the proxies : FTP_PROXY=... HTTP_PROXY=... and no, those will not make the Makefile think you're directly connected. Those are used by LWP::, for HTTP: and FTP: schemes, but not by raw IO::Socket::INET, which tested if you were DIRECTLY connected. The LPW Proxy scheme probably uses IO::Socket::INET to connect to the proxy. If you have those proxies set, you can probably let the Makefile.PL create those tests anyway. -- Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] other campus conference pages
here are some other campuses which rent out for conferences. Emphasis on *rent*. I'll agree it's a good idea to check in with each of them. If we can get internal or external sponsorships early, that *rental* might not be a budget problem. However, I think a little out-of-the-box brainstorming is in order to identify sites that wouldn't start with a steep slice-of-the-action conference rental plan. Let's think CHEAP. Who would have the necessary infrastructure yet let us use their space for cost of the janitor and security overtime (or less)? The MIT UserGroup program that we just signed up with for regular monthly meeting rooms has the right price structure -- can we leverage that into a 3-day? In recent years, MIT has had favorable (not quite free) room rates for the Saturday Seminars for GBC-ACM, but they stopped using MIT for catering. If the Computer Museum were still in town, I'd try to arrange something there, but they're not, and I don't have the contacts at MoS that I had had at TCM/B, alas. MoS hosts meetings for free if it's in there interest, but I haven't figured out how to spin this to them. Ditto the Clay Center. One place that might have a better negotiating stance than the other schools is UMass Boston, since they're public. I know the GBC-ACM did its seminars there for a while, so they rent out reasonably, if you have a faculty sponsor (advisor, not $$). Anyone know anyone at UMass Boston? U.Lowell, Framingham State and Salem State are also Public and have hosted meetings for other groups affordably, but they're a bit further out of the city. Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] yapc::boston?
Uri, while back, sean put some effort into getting BU for yapc but that got shelved. A worthy effort, for which we all applauded Sean at the time, and laud him now again. One would expect our high density of schools to make it easy here. However, at least some of the larger local schools expect to make big $$$ by hosting summer academic conferences they sponsor -- they expect attendees to be spending grant money. That's not the case for YAPC::NA, obviously. So we either need to spin very carefully at those schools to get a true sponsorship, or have a different sort of in at a different sort of school. Some local academic conferences that I attend are cheap like YAPC::NA -- complete with dorm room with assigned roommates if desired for really cheap -- but I don't recall their being in Boston proper in recorded history ... Framingham, Providence, Worcester, or further. And they were all sponsored by a Department Chairman (or other tenured faculty member), because it was an honor to host the regional meeting of a relevant professional society. Are there Tenured Computer Science Professors (or MIS Professors) on this list? Someone who can sell it as a Department Project? [Sean might be able to sell it if there was a good strong BIO-PERL track, but I'd expect to need a stronger lever to get cheap or free at *BU* than even Sean's Department Chair. Cheap is not BU style.] The contacts I have aren't very current any more ... we have a large active pm group so i think we could pull off yapc Agreed, we've got several folks with some conference management experience, and I might be able to recruit some ringers who just like running conferences :-). I'm certainly interested in some degree of involvement in this. Not sure if I'd get official schedule slack to get as involved as I might like, though, but worth a try. if we could get a decent site (fsdo decent). Please define Decent. Low total cost of housing, transport, registration seems to be the major driver for YAPC::NA ? Uri, please confirm. Also, What is the expected target total out of pocket expense for a Dubuque.PM member attending YAPC::NA ? i think boston would make a great place for yapc. Agreed. It would let me go, since I have no travel budget for my mandatory training ... -- Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] CGI::Prototype
as I recall, it still lacks things like sessions or authentication. Not sure about that. Randal evolved it for a shopping-cart type app, so I would think it has something like that. More importantly, does anyone get Randal's CGI::Prototype? See http://www.stonehenge.com/merlyn/LinuxMag/col70.html and 71 and 72 for 3-part worked example(s) [Linux Magazine May-July, 2005] There's also http://sourceforge.net/mailarchive/forum.php?forum=cgi-prototype-users Usually Randal's recommendations or modules have a readily apparent elegance to them, Indeed. The elegance here comes from the use of Class::Prototyped, which is the inspiration. http://search.cpan.org/~teverett/Class-Prototyped-1.10/lib/Class/Prototy ped.pm brings relative to the added complexity it introduces. CGI::Prototype offers a _different_ way of factoring out the you always had to write this glue code code. Catalyst uses the Perl Attributes annotations to factor out glue-code, which is classy demonstration that attributes are a good idea. CGI::Prototype uses prototypical (instance-based, or nonce-class) inheritance. Prototypical inheritance is not your classical C++/Java rigid Object Isa Class inheritance structure, or even SmallTalk 1st-Class 2nd-Order Class objects, so is somewhat foreign on first impression. Every object has it's own class, which may be same or similar to other objects'; the key relation is not Isa but Has (and Can). This model goes back to antiquity, via the Self language (1980's) to the earliest days of A.I. in Lisp (late 1960's or early 1970's?) and the Frame/Slot/Attribute/Facet theory of knowledge representation (later in Prolog and other engines as well). Some of us have done similar things in C++ and SmallTalk; there was a blossoming of this model in the Expert System rage of the 1980's. Prototype-based nonce-classes are highly flexible, very cool, but hard to get your head around the first time, since it's so heterodox (outside the Lisp / A.I. community, that is, and much of Lisp moved on with Scheme and CLOS standards). For background on Frame-based knowledge bases, see for instance http://www.cse.unsw.edu.au/~claude/teaching/AI/notes/prolog/Frames/Frame s.html http://deed.megan.ryerson.ca/~fil/I/Papers/kicIII/node10.html http://www.amzi.com/ExpertSystemsInProlog/06frames.htm (Aside -- Frame-structures are inherently XML friendly, http://www.ai.sri.com/pkarp/xol/xol.html but antedate XML per se by 20+ years -- there was likely cross-fertilization between Frame folks and SGML folks in the 80's.) -- Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
[Boston.pm] apache with attributes redux RE: CGI::Prototype
Off-list, I'm told my comment
CGI::Application uses Attributes for some things as well, so ...
someone must have [f]igured it out?
is only partially right, as Attributes are only in a C:A:Plugin,
http://search.cpan.org/~thilo/CGI-Application-Plugin-AutoRunmode-0.08/Au
toRunmode.pm
Of course, you'd still want that to work with mod_perl and mod_perl#2
...
However, the someone must have comment still applies for
Apache::Reload, as the Catalyst folks seem to think it works:
One beauty of this scheme is that you could probably work out a way
to re-load the rules on the fly, allowing for lightning-quick
development and testing.
http://search.cpan.org/~msergeant/Apache-Reload-0.07/Reload.pm
Understood.
[ http://lists.rawmode.org/pipermail/catalyst/2005-June/000496.html ]
So, implication is that it works -- the question is how can it work?
This prompted me to look up CHECK block or INIT block and mod_perl.
Stranger than fiction, the Mod-Perl docs say BEGIN can be reinvoked in
mod_perl at sensible times under certain esoteric conditions but neither
CHECK or INIT blocks get called, ever. (This seems just wrong, people
ought to be encouraged to use CHECK or INIT if that's what they mean.
Couldn't they fix this in ModPerl2 ??)
Perl only calls these blocks during perl_parse(),
which mod_perl calls once at startup time.
Therefore CHECK and INIT blocks don't work for the same reason
these don't:
perl -e 'eval qq(CHECK { print ok\n })'
perl -e 'eval qq(INIT { print ok\n })'
Wow. Distressing.
And as advertised, the *default* time for an Attribute::Handler to
execute is CHECK.
But they can be set to INIT time (or BEGIN or END).
http://www.perladvent.org/2003/7th/
http://search.cpan.org/~abergman/Attribute-Handlers-0.78/lib/Attribute/H
andlers.pm
One can imagine a module deciding, while it's loading, to set it's the
attribute handlers to be BEGIN blocks if in mod_perl and CHECK blocks if
not, and arranging for Reload to trigger the repeating BEGIN block
cases, but that's just too weird.
So what does it do? Well, let's cheat and look at the code.
http://search.cpan.org/src/MRAMBERG/Catalyst-5.33/lib/Catalyst/Base.pm
Looks to me like Catalyst is eschewing elegant but problematic
Attribute::Handler and going straight down to Perl's native ugly
attributes(3pm) http://www.perlpod.com/5.8.4/lib/attributes.html .
Since these are built-in, perhaps they're mod_perl friendly and just
programmer-hostile?
http://search.cpan.org/~mramberg/Catalyst-5.33/lib/Catalyst/Base.pm
defines class variables _attr_cache and _action_cache , and
subroutines:
# note - see attributes(3pm)
sub MODIFY_CODE_ATTRIBUTES {
my ( $class, $code, @attrs ) = @_;
$class-_attr_cache-{$code} = [EMAIL PROTECTED];
push @{ $class-_action_cache }, [ $code, [EMAIL PROTECTED] ];
return ();
}
sub FETCH_CODE_ATTRIBUTES { $_[0]-_attr_cache-{ $_[1] } || () }
So the answer seems to be:
The Catalyst team didn't use the elegant Damian-modules that make the
underlying feature much much easier to program but alas don't work under
mod_perl since they (ab)use CHECK and INIT blocks to defer work until
compilation is done (Class::Delegation has same issue). Having seen
what was possible, they just used the same ugly interface that Damian
used to get the same effect.
Cheers,
Bill
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Re: [Boston.pm] Perl Best Practices
Of course, Damian's PBP are for a Work Group working together. It's much better than average compromise for working together ... where each choice has a reason. Damian's PBP's only apply to Damian's code when he codes for the PBP modules for CPAN, not for the ACME modules. Uri is free to use whatever rules he wants ... when he's not coding for a dept that has adopted PBP as it's standard. William Ricker Not speaking for the firm -Original Message- From: Uri Guttman [mailto:[EMAIL PROTECTED] Sent: Saturday, August 13, 2005 6:08 PM To: Tom Metro Cc: L-boston-pm Subject: Re: [Boston.pm] Perl Best Practices TM == Tom Metro [EMAIL PROTECTED] writes: TM Uri Guttman wrote: actually i disagree with a bunch of the rules in PBP... TM Could you elaborate on that? not without going through the book in detail and picking out all the rules i disagree with or have a different viewpoint on. and i can disagree or see different views on most any subject! :) damian's acknolegdment line for me is: To Uri Guttman, for seeing things no-one else did, in ways no-one else could. :) one i rule i disagree with is his use of a set of default regex modifiers. i can see having /x on all the time but i stick with using /s and /m as needed even if they would work ok if they were on all the time. there are places where i actually use the fact that . doesn't match \n. these are posited in the first set of rules in the chapter on regexes. there are others but i would be amazed to find anyone or group (other than damian!) who would practice all these rules to the letter. as i said in another post, the rules are as much a way to get you to think about your code and style than just a particular way to code. you can choose your coding style as long as you consciously choose it and are consistant in your use of it. uri -- Uri Guttman -- [EMAIL PROTECTED] http://www.stemsystems.com --Perl Consulting, Stem Development, Systems Architecture, Design and Coding- Search or Offer Perl Jobs http://jobs.perl.org ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
Re: [Boston.pm] Reef database architecture
have you considered using a native XML database for storage instead of an RDBMS? Elegant solution for small systems. Likely to have a scaling issue for the number of users Phil hopes to scale to ... Anyone with large scale experience with these things, if they've grown up fast lately, please correct me. Bill ___ Boston-pm mailing list Boston-pm@mail.pm.org http://mail.pm.org/mailman/listinfo/boston-pm
