Brackets are needed to make the mapping function return a 2-element list for each element of @numbers, which is what I think ikegami intended:

print join ' ', map { (0, $_) } @numbers;

--

"Any sufficiently analyzed magic is indistinguishable from science" - Agatha Heterodyne

In reply to Re^3: array join missing zero and space by mykl
in thread array join missing zero and space by redmustang

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