Small feature request: hvec function

[Deduction42]

Hello, I know you guys have a vec function that essentially works like this

vec(a::AbstractArray) = reshape(a,length(a))
vec(a::AbstractVector) = a

I find myself having to write an hvec function to create horizontal vectors out of arrays for convenience.

hvec(x::AbstractArray) = reshape(x, 1, :)

Using something like vec(x)' only works if x is numeric. When trying to broadcast an operation to operate on every pair of elements in x and y to form a matrix, it's very helpful to be able to quickly construct a vertical vector for x and a horizontal one for y.

M = some_scalar_operation.( vec(x), hvec(y) )

Do you think it would be reasonable to put hvec into base or make vec(x)' work for vectors of all types?

[jebej]

hvec(x::AbstractArray) = reshape(x, 1, :)

That function seems reasonable.

or make vec(x)' work for vectors of all types?

This won't happen, it was decided a while ago that this syntax (') would be for linear algebra, and not for reshaping of arrays of arbitrary objects (see e.g. JuliaLang/LinearAlgebra.jl#408 & JuliaLang/LinearAlgebra.jl#410).

As a sidenote, be careful with the ' operator: it's a complex transpose, and will therefore conjugate each element of the vector.