Perl 6 Summary for 2005-04-12 through 2005-04-19
All~
Sadly, a slip of the mouse cause me to delete a partially completed
summary, so I am going to push ahead on the rewrite without a witty
intro. Feel free to make one up for yourself involving stuffed animals,
musicians, and dinner.
Perl 6 Compilers
Pugs 6.2.0
Autrijus release Pugs 6.2.0 marking the first major milestone for Pugs.
This includes most of the control flow primitives of Perl 6 and is a
testament to the solid work that all of the "lambdacamels" have been
putting in.
<http://xrl.us/ftoo>
CGI.pm and multi byte characters
BÁRTHÁZI András was having trouble encoding and decoding multi byte
characters in CGI.pm. This led to a general discussion of how to escape
such characters in URLs as well as when to call " chr ".
<http://xrl.us/ftop> -- discussion
<http://xrl.us/ftoq> -- more discussion
auto currying?
Matthew D Swank wondered if he really needed an extra set of parens to
simultaneously call a function generator and its generated function.
Autrijus told him that yes he did as Perl 6 is not quite Haskell yet.
<http://xrl.us/ftor>
case insensitive P5 regex
BÁRTHÁZI András wanted to use the :i switch on P5 regexes. Autrijus
implemented it, but Larry noticed that this introduced a flag ordering
dependency. As a result the new way to supply flags to a perl 5 regex is
" rx:P5<imsxg"/.../ >.
<http://xrl.us/ftos>
Cookbook Ettiquette
Marcus Adair wondered if there were rules of etiquette he should obey
when writing examples for the Perl 6 Cookbook. In particular, should
examples run and be only one file. Ovid suggested that one file was a
good idea, but was open to contrary arguments.
<http://xrl.us/ftot>
Austrian Parrot/Pugs Hackathon
Thomas Klausner announced that on June 9-10 in Vienna Austria there
would be a Hackathon featuring the collective might of Autrijus, Chip,
Leo, and more. When that much brain power gets together only two things
can happen: much hacking and much drinking.
<http://xrl.us/ftou>
encoding illegal byte sequences in strings
BÁRTHÁZI András wanted to know if he could encode an illegal byte
sequence in a string. Much discussion ensued, but Larry promised that it
would be possible.
<http://xrl.us/ftov>
Test::TAP
Yuval Kogman announced the release of two new modules to CPAN which
provid Pugs smoke html.
<http://xrl.us/ftow> -- announcement
<http://xrl.us/ftox> -- smoke em if you got em
quoting constructs
Roie Marianer noticed that pugs was missing some quoting constructs and
implemented them. This led to discussion of interoplation and corners
cases. As usual Larry provided both answers and questions. Roie produced
a patch which Autrijus applied.
<http://xrl.us/ftoy> -- discussion
<http://xrl.us/ftoz> -- useful pugs hacking pointer
<http://xrl.us/fto2> -- the patch
Code Block as Argument
Stevan Little found some bugs with passing a code block to a function in
pugs. Warnock applies.
<http://xrl.us/fto3>
Push, Pop, Shift, and Unshift on Infinite Lists
Stevan Little has been playing with push, pop, shift, and unshift on
infinite lists. He thinks he has found a bug, although maybe he just
hasn't let it run long enough... Larry provided answers as to the
correct semantics.
<http://xrl.us/fto4> -- shift unshift
<http://xrl.us/fto5> -- push pop
'cd' issue in Makefile
Jonathan Worthington noticed a Win32 issue in the Makefile. He can point
to the offending line in the autogenerated makefile, but that is not
where it should be fixed. Warnock applies.
<http://xrl.us/fto6>
hyperoperator tests
David Christensen provided a patch for hyperoperators. Unfortunately,
character set transcodings ate his patch.
<http://xrl.us/fto7>
shift oddity
Stevan Little noticed that shift did not act like pop. Larry noted that
the example were not semantically valid, but even so Pugs should not
freeze.
<http://xrl.us/fto8>
Pugs SEGV
Aaron Sherman managed to make Pugs segfault. Autrijus thinks it might
already be fixed.
<http://xrl.us/fto9>
Parrot
Dynamic Perl 2
William Coleda provide the second of his patched to move Perl*PMC out of
the core. Leo applied it.
<http://xrl.us/ftpa>
SVN revision in bug reports
jreiks (Jens?) reported a difficult to reproduce bug. This caused Leo to
pine for having the SVN revision in the bug report. Brent 'Dax'
Royal-Gordon commented that this was a good idea. Jens Rieks offered to
implement it.
<http://xrl.us/ftpb>
Win32 SDL
Jerry Gay tried to get SDL working on Windows. There was some give and
take, but in the end he got his wish.
<http://xrl.us/ftpc>
-l/path/to/icu
Andy Dougherty provided a patch making Configure.pl provide a link flag
to ICU headers if provided. Jens Rieks applied it.
<http://xrl.us/ftpe>
svk and svn issues
Roger Hale noticed a small problem with parrotcode.org. Robert Spier
fixed it.
<http://xrl.us/ftpf>
nci.t failure under MinGW
François Perrad fixed a MinGW test failure. Leo applied the patch.
<http://xrl.us/ftpg>
trailing space with ${LD_OUT}
Andy Dougherty fixed an old bug with LD_OUT having trailing space. Leo
applied the patch.
<http://xrl.us/ftph>
Warnings cleaning
Jerry Gay cleaned some warnings from the source tree. Leo applied most
of the patch.
<http://xrl.us/ftpi>
Philip Taylor fixed a small Win32 path issue. Leo applied the patch.
<http://xrl.us/ftpj>
cmp op bug
Leo found a bug in <cmp>_p_i_ic opcodes.
<http://xrl.us/ftpk>
SDL unitialized variable
Nick Glencross provided a patch fixing an unitialized variable in SDL.
Leo applied the patch.
<http://xrl.us/ftpm>
perlscalar morph bug
Nicholas Clark found a bug in morph for PerlScalar. Leo verified that it
wasd a bug, and Nick Glencross offered to fix it.
<http://xrl.us/ftpn>
infix method change
Leo threatened to continue with his plan to simplify infix methods. No
one objected...
<http://xrl.us/ftpo>
used before set warning?
Nick Glencross wanted a warning for using unset variables in imcc. Leo
pointed out that this was not as simple as one might like.
<http://xrl.us/ftpp>
remove temp files for Win32 make clean
Jerry Gay provided a patch removing more files under make clean in
Win32. Warnock applies.
<http://xrl.us/ftpq>
Fix typos
Nick Glencross provided a patch which fixes some typos in docs.
chromatic applied it with a few extra tweaks.
<http://xrl.us/ftpr>
Parrot Security
BÁRTHÁZI András wondered about the general security mechanisms that
Parrot would provided. Dan assured him that security would be a
fundamental part of Parrot. He also provided a sketch of the security
model which sparked some discussion.
<http://xrl.us/ftps>
<http://xrl.us/ftpt> -- sketch
debian arm failure
Falls Huang reported a build failure on Debian-arm. Leo provided a
pointer in the write direction.
<http://xrl.us/ftpu>
missing make target
François Perrad notice that `make src/revision.c` couldn't handle
.svn/entries. Jens Rieks fixed the problem.
<http://xrl.us/ftpv>
JIT generation help
Adam Preble put out a call for some general advice on understanding
Parrots JIT. Leo provided some general dvice.
<http://xrl.us/ftpw>
"Attibute not found" exception
Cory Spencer provide a patch changing getattribute to throw a
real_exception. Jens applied the patch with a few tweaks.
<http://xrl.us/ftpx>
stderr during 'bc' configure step
Jerry Gay provided a patch to suppress stderr during 'bc' configure
step. There was some debate on how to make this cross platform. I don't
think there was a resolution.
<http://xrl.us/ftpy>
string.c segfault
Nick Glencross provided a patch fixing a few segfaults in string.c. Jens
applied it.
<http://xrl.us/ftpz>
MSWin32 ICU linkage
Ron Blaschke added ICU to the linkage for Win32. Jens applied the patch.
<http://xrl.us/ftp2>
win32 readme updates
Ron Blaschke updated the README.win32 document. chromatic applied the
patch.
<http://xrl.us/ftp3>
<http://xrl.us/ftp4> -- discussion before the patch
big changes afoot
Our pumpking Leo has some big changes underway and asked someone else to
man the pumps for a little while. Jens volunteered to be someone.
<http://xrl.us/ftp5>
more registers make Dan's code less unhappy
Dan has some very ugly generated code. It takes a LONG time to compile.
Leo sped it up by giving Parrot more registers.
<http://xrl.us/ftp6>
.const weirdness
Nick Glencross found some weirness with .const in IMCC. Warnock applies.
<http://xrl.us/ftp7>
PMC help
Bloves was hoping to get a pointer on PMC writing. Leo provided a
helpful pointer.
<http://xrl.us/ftp8>
"&&" in commands is not cross platform
Jens noticed that "&&" in commands cause problems on some platforms.
Michael G Schwern fixed it, and Jens applied the patch.
<http://xrl.us/ftp9>
MMD migration
Leo continued his slow but steady migration to a more MMD like world.
<http://xrl.us/ftqa>
<http://xrl.us/ftqb>
<http://xrl.us/ftqc>
MMD 25 - multiply
make config info available at runtime
Leo wants to have useful config information available at runtime. Steven
Philip Schubiger offered to try.
<http://xrl.us/ftqd>
remove old files
Leo opened a ticket for removing some outdated files.
<http://xrl.us/ftqe>
Small spelling errors
Steven Philip Schubiger provided a patch fixing some small spelling
errors. He worried that perhaps he was needless picking nits. I don't
think so, but Warnock applies.
<http://xrl.us/ftqf>
Win32 ICU error
François Perrad fixed a small mistake in the naming of icudt.lib.
chromatic applied the patch.
<http://xrl.us/ftqg>
Drunken Parrot
Cory Spencer has succeed in making LISP run on Parrot and uncovered a
few GC bugs in the process. Everyone was impressed.
<http://xrl.us/ftqh>
Python on Parrot
Kevin Tew wondered what the state of pyrate was. Sam Ruby provided a
general explanation.
<http://xrl.us/ftqi>
C => Parrot Compiler
Philip Taylor posted a few questions about Parrot for help with Carrot,
his C to Parrot Compiler. Leo and Chip provided a few answers.
<http://xrl.us/ftqj>
Perl 6 Language
Yet Another Perl Conference, North America
Gerard Lim announced YAPC::NA with much information and useful links.
<http://xrl.us/ftqk>
subscripts as objects
Yuval Kogman through out the idea of using subscripts as objects. Larry
worried that this would hurt speed a little too much.
<http://xrl.us/ftqm>
statement modifiers and scopes
Paul Seamons posted some examples involving local scopes and statement
modifiers. Larry decided that only curlies would delimit scopes, so as
not to surprise too many people.
<http://xrl.us/ftqn>
whitespace in heredocs
Juerd posted a question from the p6cookbook asking about spaces vs tabs.
Larry took a guess as to the context and pointed to A2 for info.
<http://xrl.us/ftqo>
in \s, <?ws>, <>
Juerd wondered what sort of character classes matched nonbreaking
spaces. Larry replied that they did, but possulated a <bws> class for
breaking whitespace.
<http://xrl.us/ftqp>
trim() and words()
Marcus Adair wondered about " trim " and " words " and if they actually
existed. It seems that trim will exist all though words might be spelled
«$string».
<http://xrl.us/ftqq>
<[]> ugly and hard to type
There was some complaining that character classes are difficult to type.
This is considered a feature as character classes do not handle
internaionalization well.
<http://xrl.us/ftqr>
comparing floats with fudge
Marcus Adair wants an easy way to compare floats with a fudge factor.
Larry seemed to feel that some DWIMery could be added to " ~~ ".
<http://xrl.us/ftqs>
$*CWD vs cwd() and chdir()
Michael G Schwern wanted a simple tied variable interface to $*CWD. This
is apparently a sensitive topic. Much discussion ensued of changing
directory in bizarre circumstances. It looks like Michael's suggestions
will not reach the core, although it looks like a fairly simple
module...
<http://xrl.us/ftqt>
Junction precedence error
Brad Bowman noticed an error in some examples involving junction
precedence. Larry confirmed there error. Patrick R. Michaud fixed it.
<http://xrl.us/ftqu>
spelling mistake in A06
Steven Philip Schubiger found a spelling error in A06. Patrick R.
Michaud applied the patch.
<http://xrl.us/ftqv>
<[a-z]> to become <[a..z]>
Larry decide that the range operator in character classes should change
to " .. ". Much discussion ensued. I like it.
<http://xrl.us/ftqw>
tainted variables
BÁRTHÁZI András wondered if he could mark variables as tainted. Luke
Palmer showed him a way.
<http://xrl.us/ftqx>
temp variables that can be redeclared
Aaron Sherman wants a way to redeclare variables without getting a
warning. He suggested " temp ". Larry suggested " ok " to turn off a
warning, but doesn't think Aaron's feature is really necessary. No
official ruling yet (I think).
<http://xrl.us/ftqy>
hyper slices
David Christensen wants to use hyper slices as a convenient way of
dealing with multi dimensional data structures. Luke Palmer showed him
how.
<http://xrl.us/ftqz>
Hyper operator corner case
David Christensen wondered how hyperoperators would know what to pad
with when one side is not long enough. The answer appears to be slightly
ill defined magic. Especially where subtraction or division is concerned
<http://xrl.us/ftq3>
fine granularity sleeping/events
Gaal Yahas wants to have an alarm function that takes a double (for
systems with sub-second timing proises). He also wants a version that
takes a callback (possibly called later). Warnock applies.
<http://xrl.us/ftq4>
junctions in subscripts
David Christensen wants junctions in subscripts to autothread. Luke
palmer commented that they might. I think they do...
<http://xrl.us/ftq5>
<http://xrl.us/ftq6>
quote operators and interpolation
Roie Marianer had a few questions about how interpolation and quote
operators would work. Laryy and Juerd provided some answers. Larry's
short version: "we pretend we're a top-down parser even if we aren't".
<http://xrl.us/ftq7>
<http://xrl.us/ftq8>
junctions with adverbs
David Christensen wants to use adverbs to supply exceptions to
junctions. Luke Palmer told him it doesn't work that way.
<http://xrl.us/ftq9>
++ evaluation order
lam Fayland found an oddity in pugs evaluation order for " ++ ". Warnock
applies.
<http://xrl.us/ftra>
statement modifiers for setting variable
Dave Whipp wants to use statement modifiers to restrict the scope for
variables in his print statements. Larry provided a different technique.
<http://xrl.us/ftrb>
tie hashes
Ingo Blechschmidt wondered what syntax to use for tieing hashes. Larry
began to muse alloud.
<http://xrl.us/ftrc>
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