Consider:

use strict;
use warnings;

my $obj = bless {};

# As function
do_something ();

# As method
$obj->do_something ();


sub do_something {
    my ($self) = @_;

    if ($self && 'main' eq ref $self) {
        print "Called as method\n";
    } else {
        print "Called as function\n";
    }
}

[download]

Prints:

Called as function
Called as method

[download]
True laziness is hard work

In reply to Re^3: What's the better Perl style? Define parameters or not? by GrandFather
in thread What's the better Perl style? Define parameters or not? by pureHeart

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