Re: [julia-users] what scopes does isdefined() look in?

Yep. I'm impressed with the many elegant design choices in Julia. I'm just pointing out some rough edges with that convenience of "eval" that might be sanded off, and thinking about what changes I'd make for that. On Monday, February 10, 2014 7:50:48 PM UTC-8, Jeff Bezanson wrote: > > Building

[julia-users] Re: Use an array as the index for selecting an element from another array

El lunes, 17 de febrero de 2014 19:03:55 UTC-6, Patrick O'Leary escribió: > > On Monday, February 17, 2014 6:57:10 PM UTC-6, David P. Sanders wrote: >> >> Hi, >> >> Suppose I have the following: >> >> r = rand(5, 5) >> >> I can select a single element of the array r using >> >> r[3, 4] >> >> Now

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

I'm sorry could you please show me an example of that? julia> @printf macroexpand("""test %s""", "TEST") ERROR: first or second argument must be a format string julia> macroexpand(@printf """test %s""" "TEST") ERROR: no method write(ASC

[julia-users] Re: Do you have binary Julia compiled on Red Hat ?

I just got Julia compiled successfully on RHEL 5.5 after following this note https://github.com/JuliaLang/julia#centos-5 I was expecting this to be much more difficult than it ended up being, so my compliments to the team that set up the build system. This doesn't rule out future more subtle pr

Re: [julia-users] Re: Anonymous functions lose type information

Issue opened to that effect: https://github.com/JuliaLang/julia/issues/5843. I think this would be a really beneficial change, actually. On Mon, Feb 17, 2014 at 11:13 PM, Stefan Karpinski wrote: > Yes, that's just a missing optimization / feature of type inference. > > I'd argue that it should b

Re: [julia-users] Re: Anonymous functions lose type information

Yes, that's just a missing optimization / feature of type inference. I'd argue that it should be perfectly reasonable to capture bindings before executing comprehensions – the theory being that comprehensions are inherently parallel so any change to the binding of f shouldn't be visible until afte

[julia-users] Typing around eval / comprehension

Just wondering if this is expected - ie. is the combination of eval and comprehension unable to cope? function test() a1 = [:a=>1, :b=>2] println(typeof(eval(a1))) # Dict{Symbol,Int64} println(typeof(Dict(collect(a1 # Dict{Symbol,Int64} println(typeof(Dict(collect(eval(a1)

Re: [julia-users] Re: How to I print the current path?

Hmm, this is getting a bit off topic. I'll reply on the issue Images #68 where this belongs Terça-feira, 18 de Fevereiro de 2014 1:57:24 UTC, Tim Holy escreveu: > > Re Images: there is a build script which I haven't tested myself, but > which in > theory should do everything for you. It was upd

Re: [julia-users] Re: Anonymous functions lose type information

On Tue, Feb 18, 2014 at 11:56 AM, Stefan Karpinski wrote: > Even if anonymous functions were exactly like named functions (they're > not), the non-constness of the bindings in your original example prevent > inlining, etc. > Yup. I added in const as well to remove this factor. I am left with type

[julia-users] Re: Errors when following Embedding Julia guide

It sounds like the directory structure in the latest pre-release is out of sync with the docs instructions on embedding... On Monday, February 17, 2014 10:35:15 AM UTC-8, Steven Diamond wrote: > > I was trying to follow this guide: > http://julia.readthedocs.org/en/latest/manual/embedding/. I ra

[julia-users] Re: error in using NLreg

sorry hit POST to soon, when I try using NLreg I get ERROR: FP not defined in include at boot.jl:238 in include_from_node_1 at loading.j1:114 in reload_path at loading.j1.140 WARNING: backtraces on your platform are often misleading or partially incorrect at c:\users\mark\.julia\NLreg\src\NL

[julia-users] error in using NLreg

Hi, New to Julia, I'm trying to use the NLreg package, in Windows 7, 64 bit. I try using NLreg and I get the message ERROR: FP not defined

Re: [julia-users] Re: How to I print the current path?

Re Images: there is a build script which I haven't tested myself, but which in theory should do everything for you. It was updated recently, because the ImageMagick binary downloads changed (and they don't provide a "latest" link). What if you check out Images master, update, and if necessary ex

[julia-users] Re: Use an array as the index for selecting an element from another array

El lunes, 17 de febrero de 2014 18:57:10 UTC-6, David P. Sanders escribió: > > Hi, > > Suppose I have the following: > > r = rand(5, 5) > > I can select a single element of the array r using > > r[3, 4] > > Now suppose that I have the position [3, 4] stored in a variable as > > pos = [3, 4] > >

[julia-users] Re: Use an array as the index for selecting an element from another array

On Monday, February 17, 2014 6:57:10 PM UTC-6, David P. Sanders wrote: > > Hi, > > Suppose I have the following: > > r = rand(5, 5) > > I can select a single element of the array r using > > r[3, 4] > > Now suppose that I have the position [3, 4] stored in a variable as > > pos = [3, 4] > > How can

Re: [julia-users] Re: Use an array as the index for selecting an element from another array

r[pos...] will do it. On Mon, Feb 17, 2014 at 7:58 PM, David P. Sanders wrote: > > > > El lunes, 17 de febrero de 2014 18:57:10 UTC-6, David P. Sanders escribió: > >> Hi, >> >> Suppose I have the following: >> >> r = rand(5, 5) >> >> I can select a single element of the array r using >> >> r[3,

Re: [julia-users] Re: Use an array as the index for selecting an element from another array

I think this will be work: julia> r = ones(5, 5) 5x5 Array{Float64,2}: 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 julia> pos = [3, 4] 2-element Array{Int64,1}: 3 4 julia> r[pos...] 1.0 — John On Feb 17, 2014,

[julia-users] Use an array as the index for selecting an element from another array

Hi, Suppose I have the following: r = rand(5, 5) I can select a single element of the array r using r[3, 4] Now suppose that I have the position [3, 4] stored in a variable as pos = [3, 4] How can I use pos as the index for selecting the *single* element r[3, 4]? I would like to do r[pos], b

Re: [julia-users] Re: Anonymous functions lose type information

Even if anonymous functions were exactly like named functions (they're not), the non-constness of the bindings in your original example prevent inlining, etc. On Mon, Feb 17, 2014 at 7:35 PM, Fil Mackay wrote: > On Tue, Feb 18, 2014 at 10:43 AM, Stefan Karpinski > wrote: > >> Yes, named and ano

Re: [julia-users] kdb+ / q users

For one thing, Kevin Lawler and I were the two weirdos with our own programming languages when we were both working at Etsy. On Mon, Feb 17, 2014 at 7:47 PM, Fil Mackay wrote: > Is there anyone here that knows language q / kdb ? Julia > reminds me of a lot of things I like about

[julia-users] kdb+ / q users

Is there anyone here that knows language q / kdb ? Julia reminds me of a lot of things I like about this language (based on the K language ). q is definitely centred around/better for time-series data than Julia. It has a ve

Re: [julia-users] Re: Anonymous functions lose type information

On Tue, Feb 18, 2014 at 10:43 AM, Stefan Karpinski wrote: > Yes, named and anonymous functions are quite different. Different syntaxes > for each are not different. > Yes, that was the conclusion. The type inference on named functions seemed to be superior - it was the lack of typedness that lead

[julia-users] Re: How to I print the current path?

OK, thanks but it would be nice to have a path() function that do just that since I'm sure that will be the first attempt of every newcomer and very much on the spirit of, for instance, pwd() Terça-feira, 18 de Fevereiro de 2014 0:19:15 UTC, Tobias Knopp escreveu: > > ENV["PATH"] > > Am Diensta

[julia-users] Re: How to I print the current path?

ENV["PATH"] Am Dienstag, 18. Februar 2014 01:13:49 UTC+1 schrieb J Luis: > > No, that's the current working directory like in unix. What I want is the > path as seen from julia (e.g the same as "path" on Windows or echo $PATH on > unix). I am trying to see if the images package works and for tha

Re: [julia-users] Re: How to I print the current path?

On UNIX, you can do ENV["PATH”] Not sure about Windows. — John On Feb 17, 2014, at 4:13 PM, J Luis wrote: > No, that's the current working directory like in unix. What I want is the > path as seen from julia (e.g the same as "path" on Windows or echo $PATH on > unix). I am trying to see if

[julia-users] Re: How to I print the current path?

No, that's the current working directory like in unix. What I want is the path as seen from julia (e.g the same as "path" on Windows or echo $PATH on unix). I am trying to see if the images package works and for that I have set the ImakeMagick path to the Windows path and have it inherit from j

[julia-users] Re: "Filled" regions in Gadfly

There wasn't a way to do this, so I just added one: http://dcjones.github.io/Gadfly.jl/geom_ribbon.html On Monday, February 17, 2014 5:06:54 AM UTC-8, Tom Nickson wrote: > > > When regressing, I quite like to plot my variance as a filled region > behind the mean - as in this example from the GP

[julia-users] Re: How to I print the current path?

pwd() Am Dienstag, 18. Februar 2014 01:01:28 UTC+1 schrieb J Luis: > > I searched he docs (and Googled) but found no found no way to print the > path. The obvious attempt failed > > ``` > julia> path() > ERROR: path not defined > ``` >

[julia-users] How to I print the current path?

I searched he docs (and Googled) but found no found no way to print the path. The obvious attempt failed ``` julia> path() ERROR: path not defined ```

Re: [julia-users] Re: Anonymous functions lose type information

Yes, named and anonymous functions are quite different. Different syntaxes for each are not different. On Mon, Feb 17, 2014 at 6:16 PM, Fil Mackay wrote: > On Tue, Feb 18, 2014 at 9:47 AM, Stefan Karpinski wrote: > >> There's no difference in what's generated by the i->i syntax and the >> functi

Re: [julia-users] Re: Anonymous functions lose type information

On Tue, Feb 18, 2014 at 9:47 AM, Stefan Karpinski wrote: > There's no difference in what's generated by the i->i syntax and the > function(i) i end syntax: > Yes these are the same (cases 3 and 4), but are different from the others (cases 1 and 2). From @Jameson's list: 1: function f(i); i; end

Re: [julia-users] Re: Anonymous functions lose type information

There's no difference in what's generated by the i->i syntax and the function(i) i end syntax: julia> function w1() f = i->i end w1 (generic function with 1 method) julia> code_typed(w1,()) 1-element Array{Any,1}: Expr(lambda, {}, {{#s3,f},{{#s3,Function,18},{f,Function,18}},{}},

Re: [julia-users] Re: Anonymous functions lose type information

On Tue, Feb 18, 2014 at 9:04 AM, Stefan Karpinski wrote: > Rather than have me try to guess what you're doing, how about posting it > in the thread? > Posting which - the wrapper function, or the full LLVM? Apologies, I wanted to keep the pollution to a minimum and felt I'd used the patience of s

Re: [julia-users] Re: Anonymous functions lose type information

Rather than have me try to guess what you're doing, how about posting it in the thread? On Mon, Feb 17, 2014 at 4:42 PM, Fil Mackay wrote: > On Tue, Feb 18, 2014 at 2:35 AM, Stefan Karpinski wrote: > >> I'm curious how you're seeing this since none of our code introspection >> functions work on

Re: [julia-users] Difference between plus and dot-plus operators with SubArrays

Hi Matthew, Great questions. On Monday, February 17, 2014 10:44:12 AM Matthew Frank wrote: > I have been trying to use SubArrays to reduce the number of matrix copies > that my code is doing, but I've been surprised to find that replacing > slices and extra copies with SubArrays seems to slow thi

Re: [julia-users] Re: Anonymous functions lose type information

On Tue, Feb 18, 2014 at 2:35 AM, Stefan Karpinski wrote: > I'm curious how you're seeing this since none of our code introspection > functions work on anonymous functions like the ones being discussed above. > Good point Stefan, I wrapped each in a global named function purely to allow code intro

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

The parser is definitely the right place to fix this. Adding macroexpand to `@printf` is a simple fix that might be implemented if somebody wants to use triple quotes with `@printf` before someone (jeff?) implements the proper fix. kl. 21:47:48 UTC+1 mandag 17. februar 2014 skrev Stefan Karpins

Re: [julia-users] Do you have binary Julia compiled on Red Hat ?

Le lundi 17 février 2014 à 02:46 -0800, xiongji...@gmail.com a écrit : > I didn't find the binary executable julia file when I decompress the > package. I don't have root authority so that I cannot formally install > the rpm package but can only decompress it. Is this file only exist > after "insta

Re: [julia-users] Re: Google Summer of Code: Your Project Suggestions

I've also been meaning to package up the Sublime-IJulia backend, which will be a way to call Julia from Python using the IJulia kernel as the backend. -Jacob On Mon, Feb 17, 2014 at 3:57 PM, Stefan Karpinski < stefan.karpin...@gmail.com> wrote: > There is already an Rif package for R interop bu

Re: [julia-users] Re: Google Summer of Code: Your Project Suggestions

There is already an Rif package for R interop but I'm not sure how current it is. Likewise, you can already call Julia from Python but this really needs someone to take ownership of it and package it up as an official, maintained Python package. > On Feb 17, 2014, at 3:43 PM, Mike Innes wrote:

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

Fundamentally I think that the difference between quotes and triple quotes just shouldn't show in parsed code at all. That's what Jeff is proposing in that issue. > On Feb 17, 2014, at 3:02 PM, Keno Fischer > wrote: > > I think that issue is slightly different as the current situation for pri

Re: [julia-users] Re: Google Summer of Code: Your Project Suggestions

Ok, I've added an autoformat project to the list. Jake, thanks for your additions. Do we have any kind of support for R interop? I might have missed it, but if not I'll add it to the list. Also, I'm thinking that it would be great for gradual adoption if there was a good story for calling Juli

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

I think that issue is slightly different as the current situation for printf could probably be solved with a call to macroexpand. On Mon, Feb 17, 2014 at 3:00 PM, Ivar Nesje wrote: > I think the issue is fine as it is. If you think the issue is important, > you can comment on the issue, and may

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

I think the issue is fine as it is. If you think the issue is important, you can comment on the issue, and maybe link to this discussion, but I do not think that is required. kl. 20:24:15 UTC+1 mandag 17. februar 2014 skrev Ismael VC følgende: > > El lunes, 17 de febrero de 2014 12:57:51 UTC-6,

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

El lunes, 17 de febrero de 2014 12:57:51 UTC-6, Daniel Jones escribió: > > I made one a while back: https://github.com/JuliaLang/julia/issues/2682 > Ok, so in cases like this, should one leave the bug report as is?, or should one update it? Thanks!

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

I made one a while back: https://github.com/JuliaLang/julia/issues/2682 On Monday, February 17, 2014 10:09:24 AM UTC-8, Stefan Karpinski wrote: > > Yes, we should support this. Could you open an issue for this feature? > > > On Mon, Feb 17, 2014 at 12:39 PM, Ivar Nesje > > wrote: > >> It seems li

[julia-users] Difference between plus and dot-plus operators with SubArrays

I have been trying to use SubArrays to reduce the number of matrix copies that my code is doing, but I've been surprised to find that replacing slices and extra copies with SubArrays seems to slow things down. My first question is what is the difference between the "+" operator and the (AFAIK u

[julia-users] Julia as a General Purpose Language

Julia is promoted as a technical computing language. However, there is this beautiful general purpose language waiting to be unleashed onto the masses. Why is this aspect of the language not communicated/marketed more? Additionally, is there currently anyone using Julia outside of the technic

[julia-users] Errors when following Embedding Julia guide

I was trying to follow this guide: http://julia.readthedocs.org/en/latest/manual/embedding/. I ran into an error on the first example. I have the latest prerelease downloaded for OS X from http://julialang.org/downloads/. I have "JULIA_DIR=/Applications/Julia-0.3.0-prerelease-a673e4c4de.app/Con

Re: [julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

Yes, we should support this. Could you open an issue for this feature? On Mon, Feb 17, 2014 at 12:39 PM, Ivar Nesje wrote: > It seems like it translate to @mstr macrocall > > macro dump(ex) > dump(ex) > end > > @dump("""hei""") > > Expr > head: Symbol macrocall > args: Array(Any,(2,)) >

[julia-users] Re: printf macro doesn't accept triple-quoted strings, is this a bug?

It seems like it translate to @mstr macrocall macro dump(ex) dump(ex) end @dump("""hei""") Expr head: Symbol macrocall args: Array(Any,(2,)) 1: Symbol @mstr 2: ASCIIString "hei" Ivar typ: Anykl. 18:31:53 UTC+1 mandag 17. februar 2014 skrev Ismael VC følgende: > > julia> col

[julia-users] printf macro doesn't accept triple-quoted strings, is this a bug?

julia> color = "red" "red" julia> @printf """yellow black %s""" color ERROR: first or second argument must be a format string julia> @printf """yellow black %s""" "red" ERROR: no method write(ASCIIString, ASCIIString) julia>

Re: [julia-users] Re: Google Summer of Code: Your Project Suggestions

I'm sure is such a formatting tool existed and it worked well, the community would get behind it. That said, a standard formatting guide enforcable through community pressure would be a good first step. I feel creating something like this is great use case for benevolent dictatorial powers.

Re: [julia-users] Re: Google Summer of Code: Your Project Suggestions

On Monday, 17 February 2014 17:56:39 UTC+1, Stefan Karpinski wrote: > > I'm actually quite sympathetic to this idea. I suspect that Jeff thinks > it's a bit of a waste of time but might be fine with using one as long as > he didn't have to put effort into creating it. My guess is that Viral > do

Re: [julia-users] Ask for a compiled Julia for RedHat

I think libuv is missing the pthread header. Keno, Didn't we see/fix this already? On Monday, February 17, 2014, Stefan Karpinski wrote: > Looks like the compiler is choking on the libuv header, which is weird. > > > On Mon, Feb 17, 2014 at 6:30 AM, > > > wrote: > >> I actually also tried to c

Re: [julia-users] Re: Google Summer of Code: Your Project Suggestions

On Mon, Feb 17, 2014 at 11:09 AM, Job van der Zwan wrote: > Developing an autoformatting tool? Like I said earlier in another > discussion, I really miss gofmt when not programming in Go these days. But > there's more to it than simple convenience. > > To quote Andrew Gerrand's > arguments

Re: [julia-users] case sensitivity option

Pretty disruptive. I'm curious why you would want such a feature? Are there other languages which have this? How would it make your job easier? I'm pretty sure this won't ever happen. To me this sounds like a rather bad idea, but I'm curious about your reasoning. Cheers! Kevin On Monday, F

[julia-users] Re: Google Summer of Code: Your Project Suggestions

Developing an autoformatting tool? Like I said earlier in another discussion, I really miss gofmt when not programming in Go these days. But there's more to it than simple convenience. To quote Andrew Gerrand's argumentsin favour of having one standard t

[julia-users] case sensitivity option

As a software instructor, I would like an option to have the language parse in a case-insensitive manner. How disruptive would such a change be? Mark Hutchinson Durham, NC

[julia-users] Re: Pandas not working

Hi Michele, Can you open an issue on https://github.com/malmaud/Pandas.jl? On Monday, February 17, 2014 4:18:28 AM UTC-8, Michele wrote: > > Hello, > I'd like to test this gist > (malmaud's > plot of julia issues), but it seems I cannot use th

Re: [julia-users] Ask for a compiled Julia for RedHat

Looks like the compiler is choking on the libuv header, which is weird. On Mon, Feb 17, 2014 at 6:30 AM, wrote: > I actually also tried to compile it on Red Hat Enterprise Linux Server > release 6.3 (Santiago), but the error message is the same as below. Do you > have any idea? > > $make > > /

[julia-users] Re: Installing julia nightly builds on Ubuntu 12.04

This looks to be the same as this issue: https://github.com/JuliaLang/julia/issues/5837 On Monday, 17 February 2014 09:59:50 UTC, Uwe Fechner wrote: > > Hello, > > I installed Julia yesterday on one PC following the instructions on > http://julialang.org/downloads/ , and it worked fine. > > I am

Re: [julia-users] Re: Anonymous functions lose type information

On Mon, Feb 17, 2014 at 12:35 AM, Fil Mackay wrote: > On Mon, Feb 17, 2014 at 2:52 PM, Jake Bolewski wrote: > >> You are pointing out differences in the parsed AST. As Jameson said the >> two forms are equivent and will get lowered by the compiler to the same >> code. I suggest browsing though J

[julia-users] Installing julia nightly builds on Ubuntu 12.04

Hello, I installed Julia yesterday on one PC following the instructions on http://julialang.org/downloads/ , and it worked fine. I am trying the same now on a different PC, and I get the following error message: ufechner@TUD277255:~$ julia julia: error while loading shared libraries: libjulia.so

[julia-users] Re: Google Summer of Code: Your Project Suggestions

Any time, Stefan - and I wholeheartedly agree about keeping this up permanently. Speaking from experience, the issue tracker can be a little intimidating for people who want to get involved. I didn't mean to suggest any preference for CUDA over OpenCL, so I'll add a note about the latter (this

[julia-users] "Filled" regions in Gadfly

When regressing, I quite like to plot my variance as a filled region behind the mean - as in this example from the GPML website. assuming I had data: x, mean, std_dev and I wanted to plot mean against x and (mean +/- std_dev) again

[julia-users] Pandas not working

Hello, I'd like to test this gist (malmaud's plot of julia issues), but it seems I cannot use the module Pandas. The error is: julia> using Pandas Loading help data... ERROR: key not found: "_IXIndexer" in getindex at /home/michele/.julia/PyCal

Re: [julia-users] Ask for a compiled Julia for RedHat

I actually also tried to compile it on Red Hat Enterprise Linux Server release 6.3 (Santiago), but the error message is the same as below. Do you have any idea? $make /bin/sh ./config.status config.status: creating Makefile config.status: executing depfiles commands config.status: executing li

Re: [julia-users] Ask for a compiled Julia for RedHat

I'll caution you that even if you get it working on that machine, you may encounter further problems once you start trying it out. Even the packages shipped with CentOS 6.4---similar to RH 6.4, which is two years newer than 5.6---are on the verge of being too old to be useful. (The version of gi

Re: [julia-users] Do you have binary Julia compiled on Red Hat ?

I didn't find the binary executable julia file when I decompress the package. I don't have root authority so that I cannot formally install the rpm package but can only decompress it. Is this file only exist after "install" the rpm package formally? We have two type of servers, one is Red Hat En

Re: [julia-users] update problem

The issue is solved, a fresh reinstall built Cairo and Tk without problem. Thanks.