[julia-users] Re: When will juno-atom bundle become available?

Julia is largely a volunteer effort. Perhaps you'll be lucky and another member of the community will step forward to volunteer. But more likely, if you really want this to happen, you will need to be the one to make it so.

[julia-users] Re: Favorite intro tutorials?

The manual + https://en.m.wikibooks.org/wiki/Introducing_Julia On Monday, December 14, 2015 at 7:32:07 PM UTC-5, Spencer Russell wrote: > > What introductory tutorials or resources are people liking these days? > I'm particularly interested in people who have just learned Julia > recently, but o

[julia-users] Re: Simple bench : what I am measuring ??

"If you are posting a message on performance issues, please make sure that you do not have variables in global scope in your program. Wrap all your code in a function before timing it. Also, do see the section on Performance Tips

[julia-users] Re: How to efficiently count the number of lines in a file

You could try countlines(). Also, you likely want eachline() rather than readlines(). eachline() will iterate through the file for you. cheers, Keith

[julia-users] Re: Teaching Julia to an 8 year old (and a 12 year old)

Hey Scott, Just bumped across an old IJulia Notebook my 9-year old and I did last year. He was getting '24' problems (use +,-,*,/ with 4 numbers to make 24) and got one he swore couldn't be solved. We put together a little brute-force solver to test that out -- he was right. Anyway,

[julia-users] Re: String performance in Julia

Yes, I care about faster conversions between string types. On Monday, May 11, 2015 at 10:52:28 PM UTC-4, Scott Jones wrote: > > I would like to get the performance of string handling in Julia improved > (and also correct a number of flaws in handling Unicode). > Currently, many of the operations

Re: [julia-users] Re: webpy equivalent

You can clone the repo from the '...' icon on the left, or download it using cloud icon on the left. On Thursday, March 12, 2015 at 4:13:34 AM UTC-4, paul analyst wrote: > > Thx for info look nice > but I am using win7 , usualy using Pkg.add. How to install skeleton-webapp > on my Julia under w

[julia-users] Re: Declaring a function taking a type not yet declared as argument.

Given Julia's use of multiple dispatch, it is worth considering whether you need to declare the types of arg1 and arg2 in f() at all.

[julia-users] Re: How to read structure of HDF5 file ?

You can use the freely available HDFView, from the HDF Group. The HDF Group also provides a set of command line tools for inspecting files. Keith On Saturday, January 31, 2015 at 6:04:11 AM UTC-5, paul analyst wrote: > > How to read structure of HDF5 file? Look what is inside ? > > julia> fid=op

Re: [julia-users] How do Julia view the complete array ? ( not just the first and last lines...)

As Jacob suggested, if you load your data into a DataFrame and showall() on that, you should get a nicer display. > >

[julia-users] Re: problem with HttpServer

https://github.com/JuliaWeb/HttpServer.jl/blob/master/test/runtests.jl contains an example that may be helpful. See lines 27-37.

Re: [julia-users] Matlab bench in Julia

Milan -- Thank you for your diligence! >

[julia-users] Re: "Nonuniform" arrays

+1 for such a package.and for "Ragged Array".

Re: [julia-users] Julia IDE

https://github.com/JuliaLang/Interact.jl On Tuesday, September 2, 2014 12:51:00 PM UTC-4, Miloslav Raus wrote: > > Hi everybody, > > IMNSHO, the "best way" to incorporate plots into the IDE is not [just] > having to have them appear in a separate window, but the ability of the > repl to display

[julia-users] Re: Classification with Julia

svaksha's curated listing is a good resource for this type of question-- https://github.com/svaksha/Julia.jl/blob/master/AI.md On Wednesday, August 13, 2014 8:20:51 AM UTC-4, Anuj Prakash wrote: > > Hey > > I wanted to know about some good Julia packages for binary classification. > Feel free to

[julia-users] Re: character encoding

This might be easier to do on the server side. Many DBMS, including MySQL and PostGreSQL, support encoding conversions. eg convert('my_string', 'UTF8', 'ISO_8859_2') SELECT CAST(_latin1'test' AS CHAR CHARACTER SET utf8)

[julia-users] when running julia --code-coverage, where is the *.cov file?

Hello, When running --code-coverage, where does one find the .cov file? I tried: julia --code-coverage=all test.jl The program ran, but I couldn't find any coverage output. thanks, Keith Version 0.3.0-rc2+22 (2014-08-07 07:55 UTC) Commit 0816e99 (4 days old master) x86_64-redhat-linux

[julia-users] Re: FYI: pkg.julialang.org now hopefully has much better test logs

Re- > "I've change the somewhat-hidden statistics (under "more options") to show > statistics for both stable and release. Not sure if anyone else but me ever > looks at it" > I do, and have used it as a selling point for Julia. People considering Julia have natural concerns about the small s

[julia-users] ccall :u8_charnum

I can ccall :u8_charnum function from Windows but get an error on Linux: Any thoughts appreciated. Win: julia> x="asdf" "asdf" julia> ccall(:u8_charnum, Csize_t, (Ptr{Uint8}, Csize_t), pointer(x), 4) 0x0004 On Linux, I get ERROR: ccall: could not find function u8_charnum in anonymou

[julia-users] Re: Tips on reducing intermediate garbage?

Dahua Lin's post at http://julialang.org/blog/2013/09/fast-numeric/ might be helpful. On Sunday, July 20, 2014 11:41:19 AM UTC-4, Andrei Zh wrote: > > Recently I found that my application spends ~65% of time in garbage > collector. I'm looking for ways to reduce amount of memory produced by > in

Re: [julia-users] Adding a row to a DataFrame

Are you using Julia 0.3, and did you do 'using DataFrames'? I get 22 methods, including DataFrames methods, after 'using DataFrames': julia> methods(push!) # 22 methods for generic function "push!": push!(a::Array{Any,1},item) at array.jl:464 push!{T}(a::Array{T,1},item) at array.jl:453 push!(B::

Re: [julia-users] Adding a row to a DataFrame

(copied from email reply) "Sorry! I thought you would be notified, but I guess the discussion was all on the list rather than in an Issue. It was pull request #621, merged June 10. You can see the code changes at: https://github.com/JuliaStats/DataFrames.jl/commit/3cf97fffde38517783d41f431da1271

[julia-users] Re: Julia non-negative least squares nnls is 100x slower than R nnls

Implementation details can make a very big difference in the performance of Julia code. You can see some considerations at http://docs.julialang.org/en/latest/manual/performance-tips/. Also, if you post your test code, perhaps as a Gist, that will make it easier for folks to provide useful f

Re: [julia-users] parallel for loop suggestions?

Re "I seem to remember seeing a "chunked" version of @parallel somewhere" -- Maybe https://github.com/tanmaykm/Blocks.jl? > >

[julia-users] Re: Sorting surprises

Functors might be a workaround. See e.g. http://numericextensionsjl.readthedocs.org/en/latest/functors.html#motivating-example >

[julia-users] Re: GSOC 3D Visualizations plotting API - Make a wish!

Cool! I'm digging the video. On Wednesday, June 25, 2014 10:44:03 AM UTC-4, Simon Danisch wrote: > > Hi, > I made quite a lot of progress lately =) > You can read up on it on my blog: > https://randomphantasies.wordpress.com/ > As I'm starting to sketch out my API and closing in on a first feature

[julia-users] Re: uncurried functions are ok... if you know what you are doing

You could also use a list comprehension without enumerate: d=[6,5,4,3,2,1,0] n=4 sum(d[ Bool[i<=n && d[i]!=i && d[d[i]]==i for i in 1:length(d)] ] ) >> 18 Coming from numpy, I find this syntax intuitive, aside from the requirement to explicitly set the comprehension type to Bool. On Thursday

Re: [julia-users] Julia performance on large-scale text processing?

Can you push test code into a gist? (sorry if you already posted code and I missed it) On Friday, June 13, 2014 6:31:23 PM UTC-4, Rich Morin wrote: > > On Jun 13, 2014, at 13:05, Blake Johnson wrote: > > I mean, after constructing data_list try: > > println(typeof(data_list)) > > > > To see w

[julia-users] Re: modules, include and export

While I like the consenting adults philosophy, and agree that export choices provide a useful signal when 'using' a module, that signal disappears when using 'import'. As folks begin developing larger projects, 'import' will become more important for managing namespaces. In those cases it w

Re: [julia-users] Adding a row to a DataFrame

> > I have tested it, and it works for me too. This is your code, so I > think you should get all the credit. > > Gustavo > -- > Gustavo Lacerda > http://www.optimizelife.com > > > On Tue, Jun 10, 2014 at 7:35 AM, Keith Campbell > wrote: > > Hey

Re: [julia-users] Adding a row to a DataFrame

e: > > Would be good to clean this up by removing some of the slow parts (map > usage, anonymous function usage) and have it submitted as a PR. > > — John > > > > On Jun 9, 2014, at 1:17 PM, Keith Campbell > wrote: > > > > Thanks for putting this togeht

Re: [julia-users] Adding a row to a DataFrame

Thanks for putting this togehter. Under 0.3 pre from yesterday, I get a deprecation warning in the Array version where df2 is assigned. The tweak below appears to resolve that warning: function push!(df::DataFrame, arr::Array) K = length(arr) assert(size(df,2)==K) col_types = map(el

[julia-users] display of unicode characters in Windows REPL

I've been enjoying the new latex style unicode character completions in the REPL and IJulia -- thank you, @stevengj and company. One minor source of frustration was the spotty display of those characters in the Windows REPL. Of the 2 fonts available by default, Lucida Console appears to be the

[julia-users] Re: Call for Date/DateTime strings to parse

The python dateutil .parse() function has a fairly extensive set of tests at http://bazaar.launchpad.net/~dateutil/dateutil/trunk/view/head:/test.py The license is at: http://bazaar.launchpad.net/~dateutil/dateutil/trunk/view/head:/LICENSE Keith On Wednesday, May 28, 2014 10:38:11 AM UTC-4, Ja

[julia-users] Re: Hashing speed question

Just revisited this with a recent version of Julia plus minor code tweaks. The resulting Julia times are competitive with Python. Python wall times: 0.416s, 0.389s, 0.389s, 0.389s Julia elapsed times: 0.409s, 0.396s, 0.358s, 0.399s Python import re from collections import Counter fn = "dat

[julia-users] Re: [large file] eachline memory consumption

Hi Krishna, I've run into similar problems, and had some luck with mmaps + pre-allocated storage. You can see an example at: http://nbviewer.ipython.org/github/catawbasam/catawbasam_sandbox/blob/master/lineread_mmap_short.ipynb That example reads in a list of 100 million floats from a 1.8 gb te

[julia-users] Re: speeding-up factor()

How about a gist? On Sunday, March 30, 2014 10:28:01 AM UTC-4, Laszlo Hars wrote: > > The comment next to the function header tells the output format, and you > can see in the (quite short) function code if it uses PRIMES or not. That > is all what varies. I don't know much about the Google form

[julia-users] Re: [ANN] Julia + Light Table!

This sounds great! Look forward to trying it out. On Sunday, March 30, 2014 8:46:28 AM UTC-4, Mike Innes wrote: > > Hey all, > > TL;DR: New Light Table integration available > here > . > > I just wanted to share the milestone I recently passed with my Lig

[julia-users] Re: parser generator, simple parser?

Not sure whether it addresses your use case, but there is a thread relating to parser-combinators at https://groups.google.com/forum/#!topic/julia-users/lbSWmXm36sw. cheers, Keith On Saturday, March 29, 2014 7:14:42 AM UTC-4, Andreas Lobinger wrote: > > Hello colleagues, > > maybe i'm missing a

[julia-users] Re: Constructing arrays with dim > 2

This runs fine for me, running Version 0.3.0-prerelease (2014-02-28 04:44 UTC): f(i,j) = [i,j] n=3; m=2 a = [f(i, j) for i in 1:n, j in 1:m] Out[91]: 3x2 Array{Any,2}: [1,1] [1,2] [2,1] [2,2] [3,1] [3,2] On Monday, March 24, 2014 10:07:49 AM UTC-4, Linus Mellberg wrote: > > Hi! > > I'm t

[julia-users] Re: Html Templating - Inquiry

One templating library that is available is @jverzani's Mustache.jl is a Julia version of Mustache, available at https://github.com/jverzani/Mustache.jl. On Friday, March 21, 2014 3:10:27 PM UTC-4, Joseph Curtin wrote: > > Hello All, > > Has anyone seen anything like jinja2 in the Julia-Ecosyst

Re: [julia-users] Re: Not fun

> > There is also MutableStrings.jl > at https://github.com/tanmaykm/MutableStrings.jl. >

Re: [julia-users] reducing memory allocations during line-oriented text processing

> > Looks like ccall to :jl_substrtod might be adaptable for memory efficient > processing if the example below can be generalized. > cheers, > Keith > > > julia> function str_ccall(N) > mystr = ascii("1.1,2.2") > ax=Array(Float64,1) > sx=0 > ex=2 >

[julia-users] reducing memory allocations during line-oriented text processing

Hi all, I'm trying to minimize memory allocation while doing line-oriented processing on a fairly large set of text files. SubString and pre-allocated outputs have helped, but I'm still getting memory allocations proportional to the size of the input set and looking for new ideas. The to

[julia-users] Re: inserting javascript driven graphs in ijulia

@jverzani's GoogleCharts.jl at https://github.com/jverzani/GoogleCharts.jl might have some ideas for you. On Sunday, March 9, 2014 7:42:24 AM UTC-4, Jon Norberg wrote: > > What is the best way to display graphics driven by javascript in IJulia? > > For example these two: > > http://rectangleworld

[julia-users] Re: memory allocation during readline()?

; > PS. note that I do not have your testfile, so I can not test if this is > actually better. > > I would also imagine that the least GC intensive way to read a file, would > be to reuse the same buffer for each line with readbytes! > > kl. 13:31:01 UTC+1 lørdag 8. mars 2014

[julia-users] memory allocation during readline()?

Hi all, While doing line-oriented file reads, I'm seeing what looks like alot of memory being allocated. In the case below, the file is a little over 250mb, but @time seems to indicate over 3gb is being allocated, even though I'm working with one line at a time. Should I be worried about th

[julia-users] Re: Hashing speed question

Ah, thanks for that question. I was testing from IJulia. Those tests were not showing a boost from Steven Johnson's hash function, perhaps because of the sequence in which I executed the code. Rerunning as a script from command line using the Base.hash trick + SubArrays yields run times about

[julia-users] Re: Hashing speed question

Using Symbols seems to help, ie: using DataStructures function wordcounter_sym(filename) counts = counter(Symbol) words=split(readall(filename), Set([' ','\n','\r','\t','-','.',',',':','_','"',';','!']),false) for w in words add!(counts,symbol(w)) end retur

[julia-users] Re: Hashing speed question

As a general matter, Python has probably been more heavily optimized for text IO and dictionary performance. However in this case, the Counter in library DataStructures.jl is your friend. On my system it runs almost 2x as fast as the code in your gist, presumably making it roughly equivalent

[julia-users] String to Float64 performance question

Hi all, While working to bring down the timing of a text IO oriented job, I seem to be getting string-to-float conversion times that grow more than linearly with respect to the length of the string array I'm converting. I'd appreciate any help you could provide in speeding up the Julia version

Re: [julia-users] Gadfly: multiple y axes in one plot

For telemetry and other engineering test data, it can be important to compare many time series in their measured units. In that context, views like those described at: http://scarbsf1.com/blog1/2011/08/18/telemetry-and-data-analysis-introduction/ are of real use. On Friday, February 28, 2014

Re: [julia-users] Hygienic macros could be both better and simpler

... and make Julia to " what regex is to /\ /\/\/.*|\/\*[\w]*\*\/ Ack On Wednesday, February 26, 2014 12:27:55 PM UTC-5, Ivar Nesje wrote: > > We could make people use triple double quotes when their command contains > single `"` cmd"""rm -rf ". /" """, but that would probably often lead to

[julia-users] Re: Style Guideline

+1 for Eric's proposal for a 100 character line length. The old 80 character limit in PEP 8 was the one bit of that guideline I could never abide. +1 also for Milan's proposal regarding brief comments describing a function's purpose. And thank you John for pushing a standard that can enable