Re^2: Hope a subroutine will return undef by default

Before you made the update, I prepared a short demonstration of the difference:

#!/usr/bin/perl
use warnings;
use strict;

use Data::Dumper;

sub explicit {
    return undef
}

sub bare {
    return
}

print "Explicit: ", Dumper [ explicit() ];
print "Bare:     ", Dumper [ bare() ];
[download]

Output:

Explicit: $VAR1 = [
          undef
        ];
Bare:     $VAR1 = [];
[download]

لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

Comment on Re^2: Hope a subroutine will return undef by default Select or Download Code

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Re^3: Hope a subroutine will return undef by default by boftx (Deacon) on Feb 11, 2014 at 16:55 UTC
Good demo! I didn't see it when adding the update. :( On the other hand, it's hard to have too many examples/discussions on how context can come into play in unexpected ways. It helps to remember that the primary goal is to drain the swamp even when you are hip-deep in alligators.	[reply]