Re: [julia-users] reading compressed csv file?

2016-02-28 Thread ivo welch
hi tony---thanks. I will keep an eye on the docs (presumably streams). from a novice end-user (not developer) perspective, solving the specific snippet that I noted would be great in the documentation pages. regards, /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred

Re: [julia-users] Re: csv file reading header=TRUE default

2016-02-27 Thread ivo welch
I see. thank you. it was a little confusing. it was right under the header Advanced Options for Reading CSV Files <https://dataframesjl.readthedocs.org/en/latest/io.html#advanced-options-for-reading-csv-files> ---- Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred

[julia-users] csv file reading header=TRUE default

2016-02-27 Thread ivo welch
I am a complete julia novice, so I may simply not understand the following. when I type > julia> d=readcsv("myfile.csv") > julia> typeof(d) Array{Any,2} I think this shows that it interprets the header as data, and sets the columns to be of type "any". alas

Re: [julia-users] Re: documentation suggestions

2016-02-11 Thread ivo welch
hi doug---and vice-versa. it's interesting that a core function (reading a .csv file) would not be in a native julia library. when are you switching your students to julia? regards, /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred Weston Distinguished Professor

[julia-users] documentation suggestions

2016-02-10 Thread ivo welch
ladies and gents---I am not (yet) a julia user. may I suggest adding more examples into two places where julia users will face starting hurdles? [1] the I/O docs of julia. like, reading and writing csv files that are compressed and decompressed on-the-fly, even if not in the ultimate

Re: [julia-users] Re: documentation suggestions

2016-02-10 Thread ivo welch
a double hull. many, many full *working* standalone examples are the next best thing for me. regards, /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred Weston Distinguished Professor of Finance Anderson School at UCLA, C519 Free Finance Textbook, http://book.ivo

Re: [julia-users] Re: documentation suggestions

2016-02-10 Thread ivo welch
wants a regular job, also please email me. /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ On Wed, Feb 10, 2016 at 2:47 PM, Jeffrey Sarnoff <jeffrey.sarn...@gmail.com> wrote: > That is a reasonable want; it may take Anderson some time to institute > scholarships f

[julia-users] Re: Performance between R, Julia and Cpp

2015-09-16 Thread ivo welch
On Wednesday, September 16, 2015 at 1:48:58 AM UTC-7, Sisyphuss wrote: > > I think what you need is something like code checker. You can check the > package Lint.jl. This is an on-going work, so is not perfect yet. > it is not primarily for me, though good compiler warnings are always

[julia-users] Re: Performance between R, Julia and Cpp

2015-09-15 Thread ivo welch
Julia is only at version 0.4 (well, soon). It's too soon to expect miracles. :-). however, I want to restate an old suggestion. a language should have as few surprises as possible. this applies not only to features, but also to performance.

[julia-users] julia 0.4 updated release date?

2015-08-07 Thread ivo welch
not nagging, but curious---is there an expected arrival date (plus minus) posted somewhere?

Re: [julia-users] Re: Suggestion for tuple types explanation in manual

2015-01-05 Thread ivo welch
not a real pull-request and wouldn't be merged, but it's an effective reminder. perfect. I will do this later in the week. Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/

Re: [julia-users] reading compressed csv file?

2015-01-05 Thread ivo welch
to work also with the (Pipe,Process) tuple. otoh, maybe doing this with a Handle simply automates this everywhere?! not sure. I can't weigh in on a discussion. I just don't know enough. regards, /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred Weston Distinguished

Re: [julia-users] Re: Suggestion for tuple types explanation in manual

2015-01-05 Thread ivo welch
to make writing clear. in the absence of ability to change github to allow specific insertion points, I wonder if we want to branch the docs and request that comments be left in a particular color (say, red). regards, /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred

[julia-users] reading compressed csv file?

2015-01-04 Thread ivo welch
dear julia users: beginner's question (apologies, more will be coming). it's probably obvious. I am storing files in compressed csv form. I want to use the built-in julia readcsv() function. but I also need to pipe through a decompressor first. so, I tried a variety of forms, like d=

Re: [julia-users] Re: reading compressed csv file?

2015-01-04 Thread ivo welch
Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred Weston Distinguished Professor of Finance Anderson School at UCLA, C519 Director, UCLA Anderson Fink Center for Finance and Investments Free Finance Textbook, http

Re: [julia-users] Re: reading compressed csv file?

2015-01-04 Thread ivo welch
(Pipe,Process) tuple. the same holds true for other functions that expect a part of open. julia should be smart enough to know this. regards, /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred Weston Distinguished Professor of Finance Anderson School at UCLA, C519

[julia-users] Suggestion for tuple types explanation in manual

2015-01-04 Thread ivo welch
I am reading again about the type system, esp in http://julia.readthedocs.org/en/latest/manual/types/ . I am a good guinea pig for a manual, because I don't know too much. a tuple is like function arguments without the functions. so, mytuple=(1,ab,(3,4),5) is a tuple. good. what can

[julia-users] docs for switchers and students

2015-01-03 Thread ivo welch
dear julia experts---I am about to start teaching my MFE class. Mostly, my students will do programming with data. My transitioning plan is as follows: This year, I am planning to allow using julia. (R is the standard.) Next year, I am planning to encourage julia equally with R. In 2

Re: [julia-users] docs for switchers and students

2015-01-03 Thread ivo welch
the julia chapter of their book to our students separately. I can't ask my non-CS students to purchase a book about many programming languages. everyone, wish me luck ;-) regards, /iaw /iaw Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred Weston Distinguished Professor

[julia-users] Re: Slow Devectorized Computation in Julia

2014-12-27 Thread ivo welch
would it make sense to warn the user about slowing down global variables from julia itself? and/or about other slowing constructs that are almost always beginner's mistakes that julia can guess at? my guess is that if a program does not reuse a global outside its context, this is defacto a

[julia-users] very rough sketch of future release targets

2014-12-20 Thread ivo welch
is there a (living) document that sketches rough planned release target dates and release features? note I did not call them schedule. obviously, it would and should change a lot over time. but, presumably, it would now have some target release date for 0.40-dev to become 0.40, too, for

[julia-users] pod-like and use documentation for julia?

2014-12-18 Thread ivo welch
I am still a lurker, not a user---although I hope to adopt julia in a year or so for my masters student at a B-school (wish me luck!). teaching it in a class will force me to switch to julia. I just looked at some random .jl files in the julia source. they did not have a lot of

Re: [julia-users] THANKS to Julia core developers!

2014-12-16 Thread ivo welch
my note was partly a joke, partly a warning. the R community started out very nice, too. many still are. but some of the tone has shifted towards the obnoxious. the weirdest part is that there are some people who seem to enjoy *really* helping users, all the while being somewhat

Re: [julia-users] THANKS to Julia core developers!

2014-12-16 Thread ivo welch
I would have a buy 3 year membership paypal button for $50 on the julia front page. this way, you also will have some running list of people particularly interested in the language. if this exists, I will join. Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/ J. Fred Weston

[julia-users] Re: THANKS to Julia core developers!

2014-12-12 Thread ivo welch
You mean it's better than even the R guys? Maintaining culture in the long run will be hard.

Re: [julia-users] Re: What is Julia bad for - currently? Practically (or theoretically) - any other language more powerful?

2014-12-05 Thread ivo welch
to make it even better. one should not have to write both server-side cgi programs and client-side javascript for one application. one should not even have to learn javascript... Ivo Welch (ivo.we...@gmail.com) http://www.ivo-welch.info/

Re: [julia-users] Re: What is Julia bad for - currently? Practically (or theoretically) - any other language more powerful?

2014-12-04 Thread ivo welch
there are no good web development language environments (server, browser) IMHO, and julia will not fit this bill, either. I hope julia will wipe out my need for c++, perl/python, and R. our school is planning to offer a data analytics masters program in a year or two. this does not require

Re: [julia-users] removing function completely?

2014-11-30 Thread ivo welch
thank you. how do I delete just one dispatch binding then? what is the equivalent of assigning . or undef or nothing or Nothing for removing just one dispatch? how do I mark an empty variable? (Nothing?) how do I remove a variable? regards, /iaw Ivo Welch (ivo.we...@gmail.com) http

[julia-users] perl-like regex matching parenthesis

2014-11-29 Thread ivo welch
in perl, there is a nice package feature that allows parsing text like latex macros which have matching parens. use Text::Balanced qw(extract_multiple extract_bracketed); does something like this exist (already) in julia ?

[julia-users] removing function completely?

2014-11-29 Thread ivo welch
true beginner's question: after I have defined a function (possibly multiple dispatch), how do I remove it again??

[julia-users] Re: [Offtopic:] Why you did choose the name Julia?

2014-11-27 Thread ivo welch
I with it had been something more unique...like JuliaL . too many google hits on julia. /iaw On Wednesday, November 26, 2014 6:19:04 AM UTC-8, Neal Becker wrote: All the good names were taken :) Pileas wrote: Is there a specific reason you guys chose this name? It kinda reminds

[julia-users] about - website (and kindle docs)

2014-11-27 Thread ivo welch
I was trying to figure out who is running julia and the website, and noticed that there is no about us that gives information on who the julia people are. (it says on the front page that julia is mostly under the MIT license.) would it make sense for someone to add this information? I