Julia: how to iterate row by row in a multidimensional array

Question

Say that I have 4x4 multidimensional array A:

A = collect(reshape(1:16, 4, 4))
4×4 Array{Int64,2}:
 1  5   9  13
 2  6  10  14
 3  7  11  15
 4  8  12  16

and I want to iterate row by row (i.e. [1, 5, 9, 13] first, then [2, 6, 10, 14], then ...).

How do I do it? For now I have come up with the following:

`for row in 1:size(A, 1)
    println(A[row, :])
    # do something
end`

but I was wondering if there was a more "pythonic" way of doing it: kind of for line in A: for element in line: ....

I also know about CartesianRange, but I would like to have an array-like row to work with at each iteration.

Answer 1

for visibility: nowadays (julia > 1.1) use "eachrow"

for row in eachrow(A)
    println(row)
end

Answer 2

Because arrays in Julia are stored column-major, it may be wiser / more performant to just transpose the matrix (A') and then iterate through it if you want to do a lot of things row-by-row.