I have a slight preference for omitting variable names if I don't really need them.
If you are concerned about cluttering up a (possibly over-broad) scope with needless nonce variable names (not an entirely unreasonable concern, IMO), why not just enclose the sub-section of code in its own limited sub-scope?
>perl -wMstrict -le
"{ my %h = qw(a 1 b 2 c 3);
while (my ($k, $v) = each %h) {
print qq{$k -> $v};
}
}
"
c -> 3
a -> 1
b -> 2
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