RE: [julia-users] Is there a way to use values in a DataFrame directly in computation?

Query.jl does not aim to make working with Nullables easier. The package provides querying capabilities, and is specifically designed to simply pick up whatever support for Nullables there is in julia base. Right now, as a temporary measure, Query.jl defines lots of methods for functions like

[julia-users] Julia vs Seed7, why languages succeed or fail

A. I just [re?]discovered Seed7 language, one of the few languages with multiple dispatch, also extensible (not though macros). https://groups.google.com/forum/#!topic/comp.programming/_C08U8t4dRg "Seed7 has more then 90 libraries now." [in 2013, after 7 years] They hit Top100 (93? top) on

[julia-users] Re: Julia vs Seed7, why languages succeed or fail

Who's the audience for Seed7? I googled Seed7 BLAS, Seed7 Linpack, Seed7 FFT and nothing came up. So a large portion of Julia users are not the Seed7 audience. To me, there is almost no similarity between Julia and Seed7, even if the syntax or features were similar. But for the reasons you

[julia-users] Re: Julia on Research Computing Podcast RCE

Thank you everyone for the support of the podcast. If you have other topics please let me know off list. The Julia episode is up at: http://www.rce-cast.com/Podcast/rce-107-julia.html Thanks again to: Viral Shah Stefan Karpinski Jeff Bezanson Alan Edelman Brock Palen On Saturday, September

Re: [julia-users] Re: Julia-i18n logo proposal

I also prefer the "J" one (http://imgh.us/julia-i18n-j.svg). It's more balanced. The Hindi "ja" in particular fits the circle better and looks more balanced without the diacritic "uu" (the loopy thing underneath). Nice job! John On Wednesday, October 5, 2016 at 4:35:10 PM UTC-4, Islam

Re: [julia-users] Re: Julia-i18n logo proposal

Thanks for all the feedback! I think it's fair to say most people are pending towards Arabic characters in the top circle. I am considering keeping the consonant-vowel pair جو there, since the Indic जू

[julia-users] linear algebra question

Is there a way to check if a vector v is in the linear span of a given family of vectors v1,...vn? I don't think I saw such a function in the base library but I may have missed it. I can use something like rank([v;v1...vn]) == rank([v1...vn]) but that looks inefficient. Also is there any

[julia-users] What is best practice for determining if a URL exists?

What is best practice for determining if a URL exists (known, retrievable, and not 404)?

Re: [julia-users] Re: Julia-i18n logo proposal

+1 for http://imgh.us/julia-i18n-j.svg Le jeudi 6 octobre 2016 00:22:13 UTC+2, John Gibson a écrit : > > I also prefer the "J" one (http://imgh.us/julia-i18n-j.svg). It's more > balanced. The Hindi "ja" in particular fits the circle better and looks > more balanced without the diacritic "uu"

[julia-users] julz: a command line utility for creating scalable Julia applications

Summary Julz is a command line utility for creating ambitious Julia applications. Its goal is to remove many of the petty decisions involved in starting a project and establish a standard that can be adopted by the entire Julia ecosystem. In this way it channels Ruby on Rails’ mantra of

[julia-users] Re: julia-i18n: Translators and reviewer needed!

Thanks for removing the translation. On Thursday, October 6, 2016 at 12:23:44 AM UTC+3:30, rafz...@gmail.com wrote: > > Thanks for your quick response. > I see that the Persian translation is already published before the > resolving the RTL issue. IMO it is better to unpublish it until the

[julia-users] Re: Julia-i18n logo proposal

This would be a great idea for the JuliaMath organization (current logo is ugly). Waldir Pimenta do you think you could take a stab at this, since the logos you created here are lovely. On Wednesday, October 5, 2016 at 8:35:25 AM UTC-4, Steven Sagaert wrote: > > How about using fundamental

[julia-users] Re: Julia-i18n logo proposal

that is using Steven Sagaert's idea of math constants or similar On Thursday, October 6, 2016 at 1:27:20 AM UTC-4, mmus wrote: > > This would be a great idea for the JuliaMath organization (current logo is > ugly). Waldir Pimenta do you think you could take a stab at this, since > the logos

[julia-users] Metaprogramming functions with doctring from a dict

Hello, I'm new to Julia metaprogramming but I had a look at both http://docs.julialang.org/en/release-0.5/manual/metaprogramming/ and http://docs.julialang.org/en/release-0.5/manual/documentation/ I'd like to define (using metaprogramming) 4 functions (add, subtract, multiply, divide) with

Re: [julia-users] Re: Julia-i18n logo proposal

Hello, Nice logo but I don't like "J" on top which sound a bit "occidental-centred". Most Julia code use latin characters... so maybe for i18n we could avoid latin characters So I'd remove "J" in this logo I would put arabic character (ج or جو) into green circle keep 朱 in the red circle and an

[julia-users] Re: ANN: Book --- Julia Programming for Operations Research

I have had others also tell me that they really love this book. Great work Kwon! -viral On Tuesday, October 4, 2016 at 3:59:58 AM UTC+5:30, cdm wrote: > > > now on file at our State of California agency library ... > >http://www.energy.ca.gov/library/index.html > > > > Thank You, C. Kwon

[julia-users] Re: Julia-i18n logo proposal

How about using fundamental constants? either from mathematics: pi, e, i or from physics : G, h, c On Friday, September 30, 2016 at 2:47:04 AM UTC+2, Waldir Pimenta wrote: > > Hi all. I made a proposal for the logo for the Julia-i18n organization: > http://imgh.us/julia-i18n_1.svg > > It uses

[julia-users] Re: ClusterManagers timeout

Thanks for the pointer to the offending line Ben! On Wednesday, September 28, 2016 at 4:34:48 PM UTC+1, Ben Arthur wrote: > > you could custom modify your copy of ClusterManagers.jl to wait longer by > changing the hard-coded "60" on this line: > > >

[julia-users] Re: String(Vector{UInt8}) Question

On Wednesday, October 5, 2016 at 12:01:32 AM UTC-4, josh...@fastmail.com wrote: > > OK, I understand now: they're continuation bytes for UTF-8 and can't > appear in that context so they get stripped from the string representation. > They don't get stripped — invalid data is still stored in

[julia-users] Re: Julia-i18n logo proposal

The goal here is to use different scripts to symbolize the notion of internationalization (i18n). That idea could be nice for an organization like JuliaMath (but that one already has a very nice logo made from the Julia set, which I think is more elegant :) On

Re: [julia-users] Re: Julia-i18n logo proposal

On Wed, Oct 5, 2016 at 9:29 AM, Waldir Pimenta wrote: > Oops, meant to link to julia-i18n-j.svg > in the previous message, rather than twice to the -ju variant. > I like this one – it looks nicely

Re: [julia-users] Re: Julia-i18n logo proposal

Here are the options with Arabic on top. I made two versions, one with the "Ju" sound, and one with the "J" sound. Take a look at the source code for the SVG files (julia-i18n-ju.svg , julia-i18n-j.svg ) for more details :)

Re: [julia-users] Re: Julia-i18n logo proposal

Personally I like the "j"-sound more for some reason... On Wednesday, October 5, 2016 at 3:29:00 PM UTC+2, Waldir Pimenta wrote: > > Oops, meant to link to julia-i18n-j.svg > in the previous message, rather than twice to the -ju variant. > > On Wednesday,

[julia-users] Re: linear algebra question

The documentation should be expanded with more examples. Many of the linear algebra functions work for arbitrary input types so if you construct a matrix with rational or integer inputs then many of the functions will still work. We don't have much support in base for fancy math on such

Re: [julia-users] Re: Julia-i18n logo proposal

Oops, meant to link to julia-i18n-j.svg in the previous message, rather than twice to the -ju variant. On Wednesday, October 5, 2016 at 2:26:08 PM UTC+1, Waldir Pimenta wrote: > > Here are the options with Arabic on top. I made two versions, one with the > "Ju"

[julia-users] Re: julia-i18n: Translators and reviewer needed!

Hi, I have recently started a new translation for Persian, and almost done the home page. Here one little problem exists, as you can see on http://julialanges.github.io/ the Persian page layout direction is LTR (like the other langs) while it must be RTL. any suggestion? thanks

[julia-users] MOOC with Julia

Hey guys I just realized that the University of Cape Town launched a course on Coursera plataform on Julia Scientific Programming. Link: hhttps://www.coursera.org/learn/julia-programming/ It is a four week course. The syllabus: Week #1: Welcome to the course Week #2: Working with data Week #3:

[julia-users] multiple processes question

I am an undergraduate working on a Julia parallelism project. I have read in quite a few tutorials that to get the best parallel performance I should spawn a number of processes equal to the number of cores in my processor ( working with 2 cores & 4 threads). However in a test to check

Re: [julia-users] Is there a way to use values in a DataFrame directly in computation?

This is good news, and I am holding my breath for this to be succesful! As someone from a data-rich science (Ecology), a really good way of interacting directly with data is the make-or-break for whether I will be able to persuade my colleagues to make the shift to julia.

Re: [julia-users] Simple test functions generates different codegen

Julia has to do a delicate balancing act between compilation speed and runtime speed. In the future, we may introduce multiple compilation tiers as many other JITs have, but so far we've managed to avoid it, which is really actually quite nice for both keeping implementation complexity down and

[julia-users] Re: multiple processes question

See this blog post . If your code is perfectly efficient, yes then processes equal to the number of cores (so for something like BLAS where it's written as the most efficient threaded algorithms you could image). But for your simple homework

[julia-users] choosing a new name for SJulia

I am changing the name of SJulia. If anyone has a comment or suggestion look at https://github.com/JuliaLang/METADATA.jl/pull/6602#issuecomment-251660602. I hope to only do it once!

Re: [julia-users] Calling DLL function

On Oct 5, 2016 12:51 PM, "Jérémy Béjanin" wrote: > > Hello, > > I am trying to call a DLL function to allocate a page aligned array from julia. Here is a C++ example using that function. Note that the DLL function is wrapped into this uvAPI api, but is otherwise the same

[julia-users] Re: linear algebra question

You could iteratively orthogonalize v1 through vn, setting an orthogonal distance threshold for when to consider a new vector to be in the span of the previous vectors. On Wednesday, October 5, 2016 at 5:25:26 AM UTC-4, harven wrote: > > Is there a way to check if a vector v is in the linear

Re: [julia-users] Re: linear algebra question

If v \in span{v1,...,vn} then Ax = v has a solution, where A = [v1 v2 ... vn]. An easy way to check it would be x = A\v norm(A*x - v) \approx 0.0 That's not the cheapest way, but it's short. Abel Soares Siqueira 2016-10-05 13:00 GMT-03:00 James Noeckel : > You could

[julia-users] Calling DLL function

Hello, I am trying to call a DLL function to allocate a page aligned array from julia. Here is a C++ example using that function. Note that the DLL function is wrapped into this uvAPI api, but is otherwise the same except for the name. The DLL function is called x_MemAlloc, while the API

[julia-users] Re: julia-i18n: Translators and reviewer needed!

Hello! I've asked for support to Transifex regarding the RTL issue and how to fix it, I'll let you know about their answer as soon as I get it. You can watch a tutorial I made about using Transifex for translation, I hope you find it useful, and ples let me know what do you think about it!

[julia-users] Re: julia-i18n: Translators and reviewer needed!

Hello, I'm sorry for any trouble, I have reported this issue to Transifex, it may have been my fault, but I've been paying a lot of attention so this doesn't happen, but fear not, your translations are not lost, they were somehow misapplied, so I'm currently re applying them as I write this,

[julia-users] Re: julia-i18n: Translators and reviewer needed!

I have re applied the translations, just so everybody knows, translations are never, ever deleted, even if the original strings are somehow marked as ignored, even if the website endpoint is deleted, translations always stay stored. Please check out that page now, it should be fixed:

[julia-users] Re: choosing a new name for SJulia

The search is done. Thanks for the help. On Wednesday, October 5, 2016 at 6:02:58 PM UTC+2, lapeyre@gmail.com wrote: > > I am changing the name of SJulia. If anyone has a comment or suggestion > look at > https://github.com/JuliaLang/METADATA.jl/pull/6602#issuecomment-251660602. > I hope

[julia-users] Re: ANN: Book --- Julia Programming for Operations Research

I haven't read to book, but I just wanted to say lovely cover! Care to share some more details behind its origin and design. On Thursday, June 2, 2016 at 9:01:30 AM UTC-4, Chang Kwon wrote: > > I wrote a book on julia programming, focusing on optimization problems > from operations research and

Re: [julia-users] Re: linear algebra question

I would do this via QR decomposition. Produce an orthogonal basis for span v1, ..., vn via QR, then see if v changes when you project onto the space spanned by the basis. E.g. V = [v1 v2 ... vn] (Q,R) = qr(V) v - Q*(Q'*v) That last vector will be zero (small) if v is in span v1, ..., vn. I

Re: [julia-users] Re: Julia-i18n logo proposal

+1 for the logo with the 'J' sound.   -Islam _ From: Stefan Karpinski Sent: Wednesday, October 5, 2016 10:13 AM Subject: Re: [julia-users] Re: Julia-i18n logo proposal To: Julia Users On Wed, Oct

[julia-users] Re: julia-i18n: Translators and reviewer needed!

Thanks for your quick response. I see that the Persian translation is already published before the resolving the RTL issue. IMO it is better to unpublish it until the issue is cleared. On Wednesday, October 5, 2016 at 6:22:41 PM UTC+3:30, Ismael Venegas Castelló wrote: > > Hello! I've