Re: Short-circuiting a map list.

[moritz]

FWIW map in Perl 6 supports last

$ perl6 -e 'my @out = (1..5).map: { $_ == 3 and last }; say @out.perl'
Array.new(False, False)

[ikegami]

Earlier, I tried using last from a map reimplementation (since it's possible to exit a sub using last) but some AV was getting left on the stack (bizarre copy of array).