Given two "parallel" arrays, @d and @z, known to be of equal size,
want to append each element of @d onto each element of @z:
$z[$_] .= $d[$_] for 0..$#z; # one way
@z = map($z[$_].$d[$_], 0..$#z); # another way
Better ways to do it? Will Perl 6 do this more elegantly?
Title edit by tye
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