That's very impressive.  I used Sequence in Mathematica a lot and its good 
to know Julia implements similar functionality.  What is the overhead for 
"..."?  For example in the case of hcat([i for i=1:3]...).  Is it going to 
be as fast as writing the arguments explicitly like in hcat(1,2,3)?

W dniu czwartek, 3 kwietnia 2014 22:10:08 UTC+2 użytkownik Ethan Anderes 
napisał:
>
> I don't know mathematica but it looks like ... does the same thing. I use 
> it often when I have a function that has a lot of arguments. 
>
> function foo1(x,y,z,w)
>         sin(x+y+z+w)
> end
>
> fin = [
>         3,
>         4,
>         5,
>         6
> ]
>
> foo1(fin...)
>
> It also works for keyword args 
>
> function foo2(;x = 1, y = 2, z = 3, w = 4)
>         sin(x+y+z+w)
> end
>
> fin = [
>         :x => 3,
>         :y => 4,
>         :w => 5,
>         :z =>6
> ]
>
> foo2(;fin...)
>
> Cool, right?
>
>

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