I want to write code like this: for i in vcat(vector1, vector2) do_something(i) end But I want to avoid the allocation of a new array in vcat. What’s a good way to do this?

Or use Iterators.flatten: Iteration utilities · The Julia Language for el in Iterators.flatten((v1, v2)) do_something(el) end

for v in (v1, v2) for el in v do_something(el) end end

For-loop over two arrays, sequentially

rafael.guerra May 26, 2022, 9:18am 4

FWIW, from this related thread, vcat allocates but seems to be faster than Iterators.flatten.

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