julia> [1 2 3 ; 4 5 6]  # a 2x3 matrix
2x3 Array{Int64,2}:
 1  2  3
 4  5  6

julia> [1 2 3 ; 4 5 6]'  # note the quote
3x2 LinearAlgebra.Adjoint{Int64,Array{Int64,2}}:
 1  4
 2  5
 3  6