I find myself wanting to write code of the kind hcat(f(i) for i = 1:n) where f(i) would be a function computing the ith column - or possibly multiple columns - of a matrix. but I end up getting something weird, 1×1 Array{Base.Generator{UnitRange{Int64},##3#4},2}: Base.Generator{UnitRange{Int64},…

Maybe you could use collect? A = reshape(1:12, 3, 4) f(A,i) = A[:,i] hcat(collect(f(A,i) for i = 1:4)...)

`hcat` with generator

cortner February 25, 2017, 10:56pm 8

I like this, but could one not just rename your genmat to vcat ?(CORR.: I meanthcat`)

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