I have 2 arrays: a1 can be any combination of value or nil like that a1 = [1,nil,3] and array 2 the same a2 = [4,2, nil] How do I combine them together in a way that if a2 contains a value its value will take so, in the above array the result will be: [4,2,3]

There are no arrays in Elixir. You can probably use Enum.zip_with/2 . The following should do if I understand you correctly (a2 takes precedennce unless it is nil): Enum.zip_with([a1, a2], fn [a, nil] -> a; [_, b] -> b end)

OK, list, not array :slight_smile: thanks for your answer

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ehayun May 21, 2021, 5:55am 3

OK, list, not array
thanks for your answer