[julia-users] map losing type information?

[Evan Fields]

I notice when I use map with a set collection I end up with sets of type 
Any, even when the equivalent code with arrays doesn't lose the type 
information. Am I doing something wrong? Check it out:

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  (_)     | (_) (_)    |  Documentation: http://docs.julialang.org
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  | | |_| | | | (_| |  |  Version 0.4.3 (2016-01-12 21:37 UTC)
 _/ |\__'_|_|_|\__'_|  |  Official http://julialang.org/ release
|__/                   |  x86_64-w64-mingw32

julia> xSet = Set{Int}([1,2,3])
Set([2,3,1])

julia> xLst = [1,2,3]
3-element Array{Int64,1}:
 1
 2
 3

julia> typeof(xSet)
Set{Int64}

julia> typeof(xLst)
Array{Int64,1}

julia> f(x) = x+1
f (generic function with 1 method)

julia> typeof(map(f, xSet))
Array{Any,1}

julia> typeof(map(f, xLst))
Array{Int64,1}

julia>