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Re^2: Module Announcement: Perl-Critic-1.01

by xdg (Monsignor)
on Jan 26, 2007 at 15:22 UTC ( #596728=note: print w/ replies, xml ) Need Help??


in reply to Re: Module Announcement: Perl-Critic-1.01
in thread Module Announcement: Perl-Critic-1.01

I'd like to know when being explicit has ever been a problem.

It's a problem when return happens in array context -- you get a literal undef in the array. Contrived example:

use Data::Dump::Streamer; sub filter_true { if ( my $v = shift ) { return $v; } else { return undef; } } my @values = (1, 0, 0); my @true_values = map { filter_true($_) } @values; Dump \@true_values

Gives:

$ARRAY1 = [ 1, ( undef ) x 2 ];

-xdg

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