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It's a recursive, i.e. leaking, reference.

Hmm... probably safer to keep the reference on the call stack, thus releasing it on exit.

For example, adopting the convention that the reference is always passed as the first parameter:

my @factorials = map { $_[0] ||= sub { my $factor = pop; return $factor > 1 ? &{$_[0]}($_[0],$factor-1) * $factor : 1; }; &{$_[0]}($_[0],$_)} (3,5,7,9);
..or..
sub make_call { goto $_[0]; } my @factorials = map { make_call (sub { my $factor = $_[1]; return $factor > 1 ? make_call($_[0], $factor-1) * $factor : 1; }, $_); } (3,5,7,9);

In reply to Re^3: recursive anonymous subroutines by snoopy
in thread recursive anonymous subroutines by Daryn

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