Often I'm using matrices as collections of vectors, for example each column
of the matrix is a vector.
If I want to iterate through the vectors, I find myself doing:
for i in 1:size(mat, 2)
# do stuff with mat[:, i]
end
Is there a way to treat the matrix as an iterable, something like
for v in cols(mat)
# do stuff with v
end
or more generally
for v in slices(mat, 2)
# do stuff with v
end
I could use mapslices with the do notation like
mapslices(mat, 2) do v
# do stuff with v
end
but that creates an anon function, which I've heard is somewhat slow, is
that still correct?
I'm just looking for feedback on what the most Julian thing to do here is,
as I find I'm doing this quite a bit in my code.
-s
