Re: [julia-users] Packages Distances problem with Distances.Jaccard : very slow

I am not sure I quite understand. But it looks like you know how to improve the Jaccard distance code, so why not make a pull request at Distances.jl? > function myjaccard2(a::Array{Float64,1}, b::Array{Float64,1}) >num = 0 >den = 0 >for i in 1:length(a) >

Re: [julia-users] Re: Plotting lots of data

I also found that GR is a lot faster than PyPlot, so give that a try. On Mon, 2016-06-13 at 09:57, Andreas Lobinger wrote: > Hello colleague, > > On Sunday, June 12, 2016 at 10:31:06 PM UTC+2, CrocoDuck O'Ducks wrote: >> >> Hi there! >> >> I have been experimenting a little

Re: [julia-users] one lvl return kw

You're probably looking for @goto ;-) Although break may be what you want: julia> for i=1:10 for j=1:10 if j==3 break end end println(i,j) end 13 23 33 43 53 63 73 83 93 103 On Fri, 2016-06-10 at 21:26, Ford O. wrote: > Why

Re: [julia-users] Differential Equations Package

On Fri, 2016-06-10 at 17:13, Chris Rackauckas wrote: ... > Thanks for helping me get more focus! Do you plan on moving to ODE.jl to > JuliaMath? When I hit the major release, I think we should be considering > bringing us together under some organization. Thanks for the good

Re: [julia-users] Re: Status of FEM packages

Thanks for the update, looks good! On Thu, 2016-06-09 at 23:18, Jukka Aho wrote: > Hi, > > JuliaFEM developer here. > > About performance. I recently measured FEM problem assembly time vs. solver > time to find out the performance of JuliaFEM. Point was to find out when >

Re: [julia-users] Re: ArrayFire.jl - GPU Programming in Julia

ions more clear? > Or is there a way around this? > > My computer/version details: > > Processor: 3,1 GHz Intel Core i7 > > Memory: 16 GB 1867 MHz DDR3 > > Graphics: Intel Iris Graphics 6100 1536 MB > OS: El Capitan, 10.11.3 (15D21) > > Thanks, > > Rober

Re: [julia-users] Re: ArrayFire.jl - GPU Programming in Julia

You need to install the arrayfire library by hand: https://github.com/JuliaComputing/ArrayFire.jl#installation If done already, check the trouble shooting section. On Fri, 2016-06-10 at 12:10, Fred wrote: > Hi ! > > Thank you for this great package ! I tried to install

Re: [julia-users] Differential Equations Package

st checked and am surprised you guys don't have a DP78 method, but it > shouldn't take more than minutes to plop that tableau over there. Yes, we only had the Fehlberg 78. Not anymore though https://github.com/JuliaLang/ODE.jl/pull/101, thanks! >> A few more comments in-line below. Chee

Re: [julia-users] Differential Equations Package

to just have your own package(s). However, if you code up more ODE/DAE solvers, it would be great if those are usable without all the machinery of DifferentialEquations.jl and if they eventually make into ODE.jl (or some other "standard" ODE package). A few more comments in-line below. Che

Re: [julia-users] Differential Equations Package

th all the work > volunteers put in. > > Also I love your work especially mauro :) > > Anyway back to lurking. > > Gabriel

Re: [julia-users] Differential Equations Package

On Wed, 2016-06-08 at 19:11, digxx wrote: > Since Im not really up to date can anyone in 2 sentences explain to me what > the > issue with the package ODE.jl is? > Is it the interface ppl dont like or what makes it so "redundant"? The issue is that ODE.jl has not moved

Re: [julia-users] Differential Equations Package

On Wed, 2016-06-08 at 18:50, Gabriel Gellner wrote: > I absolutely agree in general. I am terrified when julia code gets to fancy :) > I am largely a bear of little brain... (thos ODE.jl choice to send back array > of arrays kind of breaks this feeling for simplicity ...

Re: [julia-users] Differential Equations Package

On Wed, 2016-06-08 at 16:36, Gabriel Gellner wrote: > So much great news in this thread! I am crazy happy that ODE.jl is not dead. > As > an interested outsider it seemed like the community got gridlocked on the API > discussion. It is nice that this is not the case. I

Re: [julia-users] Wrap fortran 90 interface code for DDE

On Wed, 2016-06-08 at 12:02, Dupont wrote: > Thank you, that is a nice suggestion. I will try to wrap RETARD and RADAR. > > However, the structure of these fortran code seems much simpler than the > one I linked above which has kinda of a classe structure. Any idea in this >

Re: [julia-users] Differential Equations Package

ttps://github.com/mauro3/MatrixColorings.jl Again, this has gone a bit stale (together with my PR https://github.com/JuliaLang/ODE.jl/pull/72 for which I made it) but I would be interested to revive it. Cheers, Mauro > Also, feel free to open up issues with feature requests / naming change

Re: [julia-users] Re: why not make the ternary operator into an optional binary operator?

On Wed, 2016-06-08 at 11:37, Patrick Kofod Mogensen wrote: > But that is exactly what Forgy's code does > > expression && do_something Problem with this is that it is a bit cryptic. There is this related issue: https://github.com/JuliaLang/julia/issues/16389

Re: [julia-users] Wrap fortran 90 interface code for DDE

Maybe this could give you inspiration: https://github.com/luchr/ODEInterface.jl It says in the readme: "If you want to compile the solvers yourself (perhaps with different options and/or a different compiler), then just call ODEInterface.help_solversupport for further informations (help topics)

Re: [julia-users] Initializing a new array generates unexpected results

On Tue, 2016-06-07 at 05:47, David Parks wrote: > Is there hidden logic behind this command that I don't see, or did I bump > into a genuine bug here? v0.4.5 Are you referring to the random value? help?> Array ... Array{T}(dims) constructs an uninitialized dense array

Re: [julia-users] Why is "collect" better than "[]"?

This was discussed at length on github, have a look there. But essentially to make it easier to create vectors of vectors. On Mon, 2016-06-06 at 16:35, K leo wrote: > Why deprecate array concatenation with "[]" and suggest to use "collect"? > It requires more typing and

Re: [julia-users] Uniform syntax

On Fri, 2016-06-03 at 21:23, Siyi Deng wrote: > I am neutral about 1 and 2. But I like suggestion 3. Note, suggestion 3 is currently valid syntax which is unlikely to go away: julia> (a, b, c) = [1,2,3] 3-element Array{Int64,1}: 1 2 3 julia> a 1 There is a reason

Re: [julia-users] Re: Private Forks of Julia Repositories

po on github. Add the github-fork as a remote: git remote add github ... git checkout my-feature-branch git push github Make PR on github. I hope this helps. > On Thursday, June 2, 2016 at 11:18:09 PM UTC-7, Mauro wrote: >> >> On Fri, 2016-06-03 at 07:58, Chris Rackauckas &l

Re: [julia-users] Re: Private Forks of Julia Repositories

On Fri, 2016-06-03 at 07:58, Chris Rackauckas wrote: > I think I will need both versions available, since the majority of the work > is public, while the private work will tend to sit around longer (i.e. > waiting to hear back from reviewers). So I'd want to be able to easily

Re: [julia-users] Re: Is Julia slow with large arrays?

On Wed, 2016-06-01 at 14:37, DNF wrote: > Out of curiosity: My understanding has been that type instabilities are > related to the compiler not being able to predict the types of variables > based on input types, not variables simply (and predictably) changing types > during

Re: [julia-users] filter() function edge case, possible bug.

Yes, this is a bug: ranges should behave as vectors in read-only situations. I suspect that this is on the radar of the devs already as there is quite a bit of work happening in this area. But still filing a bug report, if one does not exist yet, is probably the right thing to do. On Wed,

Re: [julia-users] keyword arguments and anonymous function - ERROR: syntax: "begin args... kwargs... end" is not a valid function argument name

t; > > Le mardi 31 mai 2016 09:49:38 UTC+2, Mauro a écrit : >> >> This works on 0.5, where anonymous functions are almost like normal >> functions now. >> >> On Tue, 2016-05-31 at 09:26, Femto Trader <femto@gmail.com >> > wrote: >> > Hel

Re: [julia-users] keyword arguments and anonymous function - ERROR: syntax: "begin args... kwargs... end" is not a valid function argument name

This works on 0.5, where anonymous functions are almost like normal functions now. On Tue, 2016-05-31 at 09:26, Femto Trader wrote: > Hello, > > I'm trying to define an anonymous function > > > julia> (args...) -> begin >println("hello anonymous func with

Re: [julia-users] doc fix: transposition operators in section highlighting difference to R

It would be great if you can submit a pull request for this. It's easy: - log in on github - go to https://github.com/JuliaLang/julia/blob/master/doc/manual/noteworthy-differences.rst - click the pencil icon - edit, when finished a pull request is automatically generated. - there is some

Re: [julia-users] Strange behavior of sets with custom type

I think you need to define hash for your type too as Set is based on Dict. Read up here: http://docs.julialang.org/en/release-0.4/stdlib/collections/?highlight=hash#associative-collections On Fri, 2016-05-27 at 09:40, Dario Prandi wrote: > Dear all, > > while experimenting

Re: [julia-users] julia equivalent of python [] (aka list)

On Wed, 2016-05-25 at 11:50, DNF wrote: > Is ::Array{Any, 1} the correct annotation? >>> hello(v::Vector{Any}) = println("Hello") >>> hello([2,'a']) > Hello >>> hello([2,2]) > ERROR: MethodError: no method matching hello(::Array{Int64,1}) > in eval(::Module, ::Any) at

Re: [julia-users] "using PyPlot" generates many deprecations - how to proceed?

I'm not sure I understand you question 100%. As Julia evolves towards a stable 1.0 version, bits of the language which change in a backward incompatible way are deprecated over two release cycles: in one release the old syntax will still work but generate the warning, in the following release the

Re: [julia-users] Re: Is it possible to use julia 0.4/0.5 on the same session ?

It's fine to have several versions of julia installed. The different version don't share the packages, as you saw in those two directories. Note that not everything which works on one version, works on the other. Also the packages may be at different versions. On Fri, 2016-04-22 at 20:25, Henri

Re: [julia-users] extra constructor with optional, default value for second parameter?

I wrote about this a few days ago: https://groups.google.com/d/msg/julia-users/jUMu9A3QKQQ/-ZShKvLXAwAJ It's inner vs outer constructors. Basically you have to pass in the type as a normal function argument, like e.g. `Array(Int,3)` does, or use `call` overloading: julia> Array{Int}(3)

Re: [julia-users] Re: Parametric types which add or delete fields.

gt; where a is a string, and b and c are both integers, and then I want the > constructor to return: > > Car{Void, Void, Feature3, Void, Feature5, Feature6}(nothing, nothing, a, > nothing, b, c) > > On Friday, April 15, 2016 at 12:18:56 AM UTC-7, Mauro wrote: >> >> >

Re: [julia-users] Re: Parametric types which add or delete fields.

On Fri, 2016-04-15 at 07:28, Anonymous wrote: > OP here, > > So it looks like the consensus is to use a single type with un-used > features set to nothing. I've actually been playing around with this > approach since I posted this question. Here's what I've got: > > abstract

Re: [julia-users] Int or Int64

Also, note that floats work the same on both 32 and 64 bit machines (and both default to making Float64). Concerning ints: use Int64 if you need them for your code to be correct, otherwise use Int. (Maybe best to just use Int64 to be on the save side?) This has been discussed on this list

Re: [julia-users] const functions

On Tue, 2016-04-12 at 13:47, Didier Verna <did...@didierverna.net> wrote: > Mauro <mauro...@runbox.com> wrote: > >> yes, this just binds a function to a variable. This also works: >> >> julia> foo() = 1 >> foo (generic function with 1 method) >>

Re: [julia-users] Creating new globals

On Tue, 2016-04-12 at 12:21, Didier Verna <did...@didierverna.net> wrote: > Mauro <mauro...@runbox.com> wrote: > >> On Tue, 2016-04-12 at 11:10, Didier Verna <did...@didierverna.net> wrote: >>> Hello, >>> >>> I'm wondering if anyone has e

Re: [julia-users] scoping wat

Maybe you can be a bit more explicit in what you mean, examples would help too. The only bit of the scoping rules which I find a bit questionable is that functions in a local scope have soft-scope (otherwise they have hard-scope). This has been discussed on github, search for "nonlocal". On

Re: [julia-users] const functions

On Tue, 2016-04-12 at 11:40, Didier Verna wrote: > What's the rationale behind making "function" const? Is there a > performance reason? Yes, globals need to be const to be fast. > you can't do > > function foo() 0 end > foo = 10 > > but you can still change the

Re: [julia-users] Creating new globals

On Tue, 2016-04-12 at 11:10, Didier Verna wrote: > Hello, > > I'm wondering if anyone has ever seen an actual use for dynamically > creating a new global variable by using the "global" keyword from within > a local scope?

Re: [julia-users] Modules and r/o

On Tue, 2016-04-12 at 11:03, Didier Verna wrote: > What is the rationale behind module state being read-only from the outside? Encapsulation? Seems good to me. > Is this only be default (i.e., is there a construct to still allow > writing)? Use a function julia>

Re: [julia-users] Re: [ANN] FixedSizeDictionaries

On Mon, 2016-04-11 at 22:24, Erik Schnetter wrote: > On Mon, Apr 11, 2016 at 11:07 AM, Simon Danisch wrote: >> @Christoph: arbitrarily, of course :D Joke aside, it should also use zip for >> the (keys, values) constructor (like Base does). >> @tshort: >>

Re: [julia-users] reversing each row of a matrix, in place

I think this functionality is missing in Base. But you can help yourself by adapting the reverse! function: julia> @less reverse!(collect(1:4)) On Mon, 2016-04-11 at 10:48, Thomas Magnusson wrote: > The in place reverse! function works of vectors: > > julia> a

Re: [julia-users] use Julia coverage info with Emacs

The poor man's solution: I just manually change to julia-mode and high-lighting seems to work fine. On Mon, 2016-04-11 at 09:37, Tamas Papp wrote: > Hi, > > I am just learning about coverage tools, sorry if the question is > basic. Is there a way to use the coverage information

Re: [julia-users] Find the indice of the element with the nearest value of a float in an array

On Sun, 2016-04-10 at 15:24, Fred wrote: > That's true ! But why a loop is faster in a function ? :) Check out: http://docs.julialang.org/en/release-0.4/manual/performance-tips/#avoid-global-variables >> >> I seem to recall that your example loop was not in a

Re: [julia-users] Find the indice of the element with the nearest value of a float in an array

> I tested my loop monre than 2 times as it is written in my post and I have > always the same results. The function Tim Holy posted is much faster, I > posted the results above :) I seem to recall that your example loop was not in a function(?) If so, that makes it lots slower. >> Probably

Re: [julia-users] Find the indice of the element with the nearest value of a float in an array

If your array is sorted, as your example suggests, there maybe faster methods, binary search comes to mind (implemented in searchsorted). Also, if the array is unsorted but you need to look up many values, it might be worth sorting it first. Mauro On Sun, 2016-04-10 at 13:40, Fred <fred.sof

Re: [julia-users] Maximum variable name length

524247 julia> s= symbol(randstring(524247)); julia> s= symbol(randstring(524248)); ERROR: ArgumentError: Symbol length exceeds maximum length in symbol(::ASCIIString) at ./expr.jl:8 in eval(::Module, ::Any) at ./boot.jl:243 On Sat, 2016-04-09 at 10:52, nael...@ic.ufal.br wrote: > Hello, > >

Re: [julia-users] How to initialize a Matrix{T}?

On Thu, 2016-04-07 at 21:27, Lucas de Almeida Carotta wrote: > How I make this code works? > > function read_matrix( data::DataType=Any, spacing=" " ) > local line::Vector{ data } = Array( data, 1 ) > local matrix::Matix{ data } = Array( Array{ data, 1 }, 1 ) > >

Re: [julia-users] state of Winston

https://github.com/tbreloff/Plots.jl wraps many of the plotting packages and thus allows to use all of them with a single syntax. Maybe you should give that a spin? On Thu, 2016-04-07 at 20:42, harven wrote: > Hi, I recently upgraded to the last stable version of julia (4.5). >

Re: [julia-users] assignment form function with empty body

Use: foo(x) = nothing Note, you're suggestion also returns `nothing`. On Thu, 2016-04-07 at 13:04, Tamas Papp wrote: > Hi, > > What's the most compact form of writing a function in assignment form > with an empty body? Eg is > > foo(x) = begin end > > the shortest? > >

Re: [julia-users] The manual about explicit types

On Wed, 2016-04-06 at 16:24, Didier Verna wrote: > I think the section on functions in the user manual should be fixed in > two places: > > - it says "The types of keyword arguments can be made explicit as > follows" which is misleading because, IIUC, every function

Re: [julia-users] Weird singleton varags display

On Wed, 2016-04-06 at 16:17, Didier Verna <did...@didierverna.net> wrote: > Mauro <mauro...@runbox.com> wrote: > >> It's a tuple. >> >> foo(1,2) >> (1,2) > > and foo(1,2,3) => (1,2,3) and so on. But I still don't understand :-) Did you fi

Re: [julia-users] Weird singleton varags display

> Can somebody please explain this to me: > > julia> foo(args...) = args > foo (generic function with 1 method) > > foo(1) > (1,) > > i.e., why the trailing comma ? It's a tuple. foo(1,2) (1,2)

Re: [julia-users] how should I really define const to avoid redefining warning?

I made https://github.com/mauro3/Parameters.jl potentially for your use-case. So instead of const g=9.81 const rho=1000.0 pressure(h) = rho*g*h you write: using Parameters @with_kw type Para{R} g::R=9.81 rho::R=1000.0 end pressure(h,p::Para) = (@unpack p: g, rho; rho*g*h)

Re: [julia-users] Re: possibility to define a type that is subtype of more than one supertype

My Traits.jl package hasn't seen much love recently. It should work fine (within its limitation of being experimental) for 0.4 but I'm not sure I'll find the time to update it to 0.5 when the time comes. There is also https://github.com/mauro3/SimpleTraits.jl which is (+/-) just macro-sugar for

Re: [julia-users] why is there no colvals function for sparse matrices in base?

row_ind = rows[j] # perform sparse wizardry... end end > On Friday, April 1, 2016 at 2:03:31 AM UTC-7, Mauro wrote: >> >> The reason rowvals exists is to access the vector of row-indices of a >> CSC-matrix, i.e. one of the internals of CSC, to allow ef

Re: [julia-users] why is there no colvals function for sparse matrices in base?

The reason rowvals exists is to access the vector of row-indices of a CSC-matrix, i.e. one of the internals of CSC, to allow efficient iteration over the non-zeros. However, there is no equivalent colvals internal, so there is little reason to do this and even less reason to encourage it.

Re: [julia-users] Defining part of a function outside its module

Maybe like so: julia> module Myfunc export f f(x) = g(x) * g(x) function g end end julia> using Myfunc julia> f(4) ERROR: MethodError: `g` has no method matching g(::Int64) in f at none:3 julia> Myfunc.g(x) = 2x g (generic function with 1 method) julia>

Re: [julia-users] Cleaner way of using Val types?

I think this is fine and idiomatic julia> type A{B} x::Float64 function A(x) B::Bool # asserts that B is indeed a Bool new(x) end end julia> A(x, b::Bool) = A{b}(x) A{B} julia> A(5, true) A{true}(5.0) julia> function

Re: [julia-users] Re: Is there a performance penalty for defining functions inside functions?

omething > end > > > inside helper.jl > > function helper() > do stuff > return something > end > > > > On Wednesday, March 30, 2016 at 1:26:22 PM UTC+1, Christopher Fisher wrote: >> >> There might be some cases where defining fun

Re: [julia-users] Is there a performance penalty for defining functions inside functions?

In 0.4 it is slower but this is fixed in 0.5. So I think this style is fine unless you need fast on 0.4 now. On Tue, 2016-03-29 at 18:31, Evan Fields wrote: > To keep namespaces clear and to help with code readability, I might like to > do this: > > function

Re: [julia-users] Why does the warning go away? (Or: my first Julia WAT)

> # WAT: A warning about using collect()? > > julia> a = [1:3] > WARNING: [a] concatenation is deprecated; use collect(a) instead > in depwarn at deprecated.jl:73 > in oldstyle_vcat_warning at > /Applications/Julia-0.4.5.app/Contents/Resources/julia/lib/julia/sys.dylib > in vect at

Re: [julia-users] Help needed regarding INERITANCE

10) >>> println(m.x) >>> >>> println("Calling Function C...") >>> m = number(4.5) >>> println(m.x) >>> >>> >>> typealias integer Union{number} >>> >>> println("integer inherits number ") >&

Re: [julia-users] Help needed regarding INERITANCE

ling Function B...") > m = number(10) > println(m.x) > > println("integer inherits number Calling Function C...") > m = integer(5.6) > println(m.x) > > function integer(p::Float64) #Defining Function D > z = basic() > z.x = "I am Function D

Re: [julia-users] Re: length of tuple type

That interface is still up to debate, see https://github.com/mbauman/Tuples.jl On Wed, 2016-03-23 at 12:07, Tamas Papp wrote: > I think I found another way (looking at the source): > > length(mytupletype.parameters) > > Is this something I can rely on, or some internal API that

Re: [julia-users] Help needed regarding INERITANCE

s://groups.google.com/forum/#!topic/ > julia-dev/eA4VkFAD-yQ. Still applies today. > > On Tue, Mar 22, 2016 at 11:30 AM, kunal singh <ks25...@gmail.com> wrote: > > > > On Tuesday, March 22, 2016 at 8:43:50 PM UTC+5:30, Mauro wrote: > > >

Re: [julia-users] Tools for creating presentation slides with Julia code?

> On Tuesday, March 22, 2016 at 11:00:13 AM UTC-5, Mauro wrote: > > I think you can do it with Jupyter notebooks, which also work with R. > > > Are you thinking of the RISE extension (https://github.com/damianavila/ > RISE.git) for Jupyter notebooks? I couldn't say

Re: [julia-users] Tools for creating presentation slides with Julia code?

I think you can do it with Jupyter notebooks, which also work with R. On Tue, 2016-03-22 at 16:46, Douglas Bates wrote: > This issue comes up in various forms from time to time. I will be giving a > presentation in a few days about mixed-effects models in R and Julia. If it >

Re: [julia-users] Help needed regarding INERITANCE

> Hi Mauro , > > Can you show me any example ? > I am a beginner in Julia. It would of great help for me. In Julia the number types are defined here: https://github.com/JuliaLang/julia/blob/fdbcdf78bf0106e609a8d83b9e896d2d11bae594/base/boot.jl#L156 So there are the abstract type

Re: [julia-users] Help needed regarding INERITANCE

You can only inherit from abstract types. Also, first defining type number ... end and then abstract number is not possible. It cannot be both abstract and concrete. (Also note that types are by convention Captialized). So build your hierarchy only with abstract types and make concrete

Re: [julia-users] Questions about the garbage collector

>> Can I ask how recent your Julia is. I see this with Julia 0.4 and Julia 0.5 > > 0.5.0-dev+3106 > I could try 0.4 later. Yes, that's it. I can see Bill's memory behavior on 0.4.3 (starts at 130MB, goes to ~1.4GB when running doit2) but not on yesterday's 0.5 (starts at 150MB, when running

Re: [julia-users] Re: [julia-dev] Re: Google Summer of Code 2016 - Ideas Page

know how to proceed. Whilst I did update the GSOC ODE.jl proposal, there may also be other suitable mentors. I guess that is something to be discussed. Cheers, Mauro @Ilya: Jorge is a PhD student of the authors of TaylorSeries.jl. On Fri, 2016-02-26 at 09:21, perez...@gmail.com wrote: > Hi Ma

Re: [julia-users] Re: deepcopy_internal and arrays

> However, could you please explain to me what is involved in updating dict? > I understand an ObjectIdDict is a hash table whose keys are object ID's. > But the documentation doesn't tell me how to generate such a key for my > object, nor what value to insert in the dict when overloading >

Re: [julia-users] Re: eachindex is much slower than normal indexing for matrices

On Thu, 2016-02-25 at 15:57, J Luis wrote: > Incidentally, this errors in 0.5 (but works fine in 0.4) > > julia> s=0.0; > > julia> m=rand(1,1000); > > julia> @time for el in m >s = s + el >end > ERROR: UndefVarError: s not defined > [inlined code] from

Re: [julia-users] Adding the same functionality / variables into many functions

> this is awesome > > thanks! A small word of caution: macros can make it harder for others (or your future self) to read the code, as essentially each macro introduces a new keyword. Just something to consider when introducing a macro; awesome as they are. > On Wednesday, February 24, 2016 at

Re: [julia-users] is Union type a preferred way in Julia?

> I know in F# people encourage Discriminated Unions, what about in Julia? I would say that Julia does not encourage them, but it is fine to use them. > I would like to do the following: > > immutable B end > immutable C end > > typealias A Union{B,C} > > function A(x::Int) > if x > 0 >

Re: [julia-users] Data structure for a "tree" matrix, for 2D monomial expansion?

There is also: - https://github.com/mbauman/RaggedArrays.jl which is being developed (I think) - https://bitbucket.org/maurow/ragged.jl/ which I abandoned. If I pick it up again, I'll probably use https://github.com/mbauman/RaggedArrays.jl See also:

Re: [julia-users] Passing variable number of arguments from one function to another one

You also need to splat when calling boo. Adding and `@show` helps to see what's going on: julia> function foo(a, b, x...) @show x boo(x...) end foo (generic function with 1 method) julia> foo(1,2,z...) x = (3,4) 12 Below does not work as x is a tuple of one tuple, which

Re: [julia-users] Re: Unitful.jl for physical units

Concerning exchange rates, this is a good read: http://www.mathstat.dal.ca/~selinger/accounting/tutorial.html#4 In particular the referenced section. On Thu, 2016-02-18 at 21:30, Jeffrey Sarnoff wrote: > I am thinking about how Currencies would fit with software for

Re: [julia-users] ANN CustomREPLComepletions - custom string completions in function arguments (HDF5, NetCDF...)

> Sounds very useful! I have a scenario that probably fits... When using > PyCall I always find myself pressing tab to see what methods are defined on > a python object: > > "obj[:get_something]()["... Crap... Gotta look at the docs... > > It would be awesome if you gave a quick how-to for

Re: [julia-users] Re: Blog-post on how to make package documentation

Actually, Mike, is there a way to sort the API docs? Alphabetical or to some given order? On Wed, 2016-02-17 at 17:44, Michael Hatherly <michaelhathe...@gmail.com> wrote: > Thanks for writing that up Mauro and also the shout-out :) Worth noting > Mike Innes' important wor

Re: [julia-users] Re: Blog-post on how to make package documentation

Mike and Tom, thanks! And yes, the other Mike needs mentioning too, I updated that footnote. On Wed, 2016-02-17 at 17:44, Michael Hatherly <michaelhathe...@gmail.com> wrote: > Thanks for writing that up Mauro and also the shout-out :) Worth noting > Mike Innes' important wor

[julia-users] Blog-post on how to make package documentation

/notes/documenting-a-julia-package.html (feedback welcome) Mauro

Re: [julia-users] Investigating instances of parametric types

> I have an instance of a parametric type, is there a canonical way to get > the parameter values? > For example I could have some Array{T, d} and want to know whether T is > Float64 and what its dimension is. > The only way of doing this I am aware of is writing code like: > > dimension{T,

Re: [julia-users] Strange failure running test/unicode/utf8code.jl

Reported here https://github.com/JuliaLang/julia/issues/15072 On Sat, 2016-02-13 at 22:33, Scott Jones wrote: > I'm seeing a very strange failure recently (within the last week), where > running "test/runtests.jl" seems to pass, but running the individual test >

Re: [julia-users] How to do multiple dispatch on different dimension of matrices?

There are a few things you can do: - use the Vector and Matrix typealiases - the definition of those also shows how to do this in general: typealias Vector{T} Array{T,1} If it is just a one-off thing for any type: type A{T,S} end test{T}(a::A{T,1}) = -2 test{T}(a::A{T,2}) = 7 test(A{Int,2}())

Re: [julia-users] Creating closures referencing type parameters recently broken

Here's the issue: https://github.com/JuliaLang/julia/issues/15068 On Sun, 2016-02-14 at 00:49, Jonathan Goldfarb wrote: > Ah, I do recall reading that thread but didn't make the connection. I thought > I'd built a version recent enough that it should have already broken due

Re: [julia-users] Re: Googling the functions I need in Julia is hard

Also at the Julia REPL: julia> apropos("standard deviation") randn! stdm std randn help?> std search: std stdm STDIN STDOUT STDERR setdiff setdiff! hist2d hist2d! stride strides StridedArray StridedVector StridedMatrix StridedVecOrMat redirect_stdin std(v[,

Re: [julia-users] Calling a macro to generate functions

Macros only work on syntax but not on values, as you noted in your post. Here again: julia> macro test(args...) @show args :() end julia> @test k[5] u[i] args = (:(k[5]),:(u[i])) () Macros are processed during parsing of the source, no values exists at that point. Jacob

Re: [julia-users] usage of eachindex with Array type?

It works like so: julia> for i in eachindex(A) @show A[i] end ... I.e. the `i` is to be used as sole index into the array. What `i` is exactly depends on the type of the array. It's either just a Int or a `CartesianIndex` has a field `I`. But you should not access `I`

Re: [julia-users] usage of eachindex with Array type?

> Thank you Mauro, CartesianRange(size(A)) seems to be what I am looking for. That should automatically be done for you by eachindex. In fact, eachindex will select the fastest method available for iterating over all indices. But if you need extras, as described in that blog post of

Re: [julia-users] Re: [julia-dev] Re: Google Summer of Code 2016 - Ideas Page

> I am interested in Ordinary Differential Equations package. But when I was > reading the conversations on the mailing list as well as on GitHub, someone > mentioned that quite a bit of work has already been done. So I want to know > the status as well as future prospects of the package ODE.jl .

Re: [julia-users] Multiple dispatch and AbstractString

This is because Julia's types are invariant (it's easy to find in the documentation once you know what to look for): g{S<:AbstractString}(s::Vector{S}) = println("here!") On Wed, 2016-02-10 at 16:23, Ján Dolinský wrote: > Hi, > > I am facing the following dispatch

Re: [julia-users] Multiple dispatch and AbstractString

actString}(s::Vector{S}) = println("here!") works for all subtypes of AbstractString. > Regards, > Ravi > > On Wednesday, February 10, 2016 at 9:04:49 PM UTC+5:30, Mauro wrote: >> >> This is because Julia's types are invariant (it's easy to find in the >> documentat

Re: [julia-users] Re: Computing a related concrete type

`similar` does what you're looking for: ``` similar(array, [element_type=eltype(array)], [dims=size(array)]) Create an uninitialized mutable array with the given element type and size, based upon the given source array. ``` Note that this puts the burden onto the creator of the type. On Wed,

Re: [julia-users] Re: Computing a related concrete type

rray example shows. > On Wednesday, February 10, 2016 at 2:38:28 PM UTC-5, Mauro wrote: > > `similar` does what you're looking for: >> >> ``` >> similar(array, [element_type=eltype(array)], [dims=size(array)]) >> >> Create an uninitialized mutable array

Re: [julia-users] let unpack

I think this should work. You should file an issue if there is none yet. On Thu, 2016-02-11 at 02:18, vish...@stanford.edu wrote: > You can normally do > > z = (1,2,3) > (a,b,c) = z > > and it will unpack things from z into a,b,c. > However, if you do: > > let (a,b,c) = z; a end > > it's a

Re: [julia-users] if .. else on a whole array

Probably cleanest would be to make two methods, one for scalars, one for arrays. For the array one just loop. This also works, but returns an array for scalar input (type inference should work once wrapped in a function): julia> x = 5 5 julia> [ xi>5 ? 0:1 for xi in x] 1-element Array{Any,1}:

Re: [julia-users] if .. else on a whole array

; --Tim > > On Wednesday, February 10, 2016 04:15:30 AM Ferran Mazzanti wrote: >> Thanks Mauro... >> >> using two methods was the first thing I thought, but I strongly dislike the >> idea because I'd have to maintain two different functions >> to do the sam

<    1   2   3   4   5   6   7   >