I’ve been playing around with Julia lately and have been enjoying it. I have come from python and as a learning exercise was looking at re-writing some code I had written to do least significant bit embedding. I’m wondering if my re-write below is the best way to write a more complicated generator …

[image] rokkuran: I’m wondering if my re-write below is the best way to write a more complicated generator or if there are better or more efficient ways to implement one. The best way to build a “complicated generator” is to make a type which implements the iterator interface. That’s explaine…

Thanks Chris. I think my attempt above does use the iterator interface - happy that I’ve used the best method to create one. After seeing your response and thinking about this a bit more, my main issue was probably more around the fact that I had to create two generators to achieve what I wanted a…

Have you seen Channels? They are the direct Julia equivalent of Python generators. [image] PyGen - python style generators Community And even better (in my opinion), combining it with short-form function syntax, f(x) = Channel() do c ... push!(c, y) ... end …

@fengyang.wang Thanks for the response. I had looked at Tasks but as they were used in parallel computing, I thought they might be overkill for what I was doing. I tried to create a generator using Channels (running Julia v0.5.2) this morning with no luck. I had success with the Tasks equivalent: …

Task is the right way to do this on 0.5; it is only on 0.6 that the concepts of Channel and Task have been merged.

@fengyang.wang Thanks. I suspected that might be the case.

Hello, I also looking for a way to define a generator using Channel Generator1() = Channel() do c i = 1 while(true) push!(c, i) i = i + 1 end end function Generator2() c = Channel{Int}(1) i = 1 while(true) push!(c, i) i = i + 1 end end …

Generator1() = Channel(ctype=Int) do c i = 1 while(true) push!(c, i) i = i + 1 end end The above code is calling this constructor Channel(func::Function; ctype=Any, csize=0, taskref=nothing). The first argument comes from the do…

Did you end up resolving this error?

In Julia 1.0, are Channels still the preferred way of implementing Python-like generators in Julia?

Creating Generators

General Usage

fengyang.wang May 29, 2017, 7:18am 4

Have you seen Channels? They are the direct Julia equivalent of Python generators.

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Creating Generators

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