I need help :smiley: What is the difference between: function a() funcs = [] i = 1 for j=1:100 push!(funcs, (args...)->i) i += 1 end return funcs end b = a() b[1]() and function c() funcs = [] for i=1:100 pu…

https://docs.julialang.org/en/v1/manual/variables-and-scoping/#Local-Scope the behavior should be explained here, My guess is your first function should fall into: When x = <value> Existing Local because function is a hard local scope and your assignment is in a soft local scope (for). One …

The behavior of a() is due to the way closure works, as all the functions in funcs will return the local variable i as it updates. The second scenario is a bit different because the iterator variable i is new for each iteration. Besides @jling recommendation, it’s also possible to use the let block…

Thanks for the explanation and the way to avoid this. The other question is why do all those functions have the same name?

[image] Wikunia: The other question is why do all those functions have the same name? Just the way @show works for arrays? julia> @show d[1] d[1] = var"#1#2"{Int64}(1) #1 (generic function with 1 method) julia> @show d[2] d[2] = var"#1#2"{Int64}(2) #1 (generic function with 1 method)

Because that is their name: # a is generated with the second loop julia> a[1] === a[2] false julia> typeof(a[1]) === typeof(a[2]) true julia> a[1] #1 (generic function with 1 method) julia> a[1]() 1 julia> a[2]() 2 It’s just that they box different values: julia> dump(a[1]) #1 (function of ty…

I learn a lot today :slight_smile: Thanks for the example and explanation,

Scope and anonymous functions

General Usage

Henrique_Becker October 18, 2020, 8:06pm 8

I talk a little about the scope of variables inside loops here, and I really deepen the topic here.

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Scope and anonymous functions

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