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Re^3: Sequential defined-or operators

by ikegami (Pope)
on Jan 15, 2008 at 03:28 UTC ( #662416=note: print w/ replies, xml ) Need Help??


in reply to Re^2: Sequential defined-or operators
in thread Sequential defined-or operators

It took me a second to understand that you are referring to the short-circuiting nature of //. If you needed the short-circuiting behaviour pre-5.10, here's one solution:

sub first(&@) { my $cb = shift(@_); for (@_) { my $i = ref eq 'CODE' ? $_->() : $$_; my $rv; $rv = $cb->() for $i; return $i if $rv; } return; } my $theme = first { defined } \$global_config->{modes}{$current_mode}{theme}, \$theme_config->{current_theme}, \&ask_user, \'none';


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