I think perhaps your confusion stems from thinking that there is only one variable called $n. In fact, each call to your function creates a brand new $n variable.

Study this. Note that I never add anything to $n - only subtract from it. Now run it to see the output:

use strict;
use warnings;

sub counter
{
    my ($n) = @_;
    
    print "N is $n\n";
    
    if ($n > 0) {
        counter($n - 1);
    }

    print "N is $n\n";
}

counter(4);

[download]
package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name

In reply to Re: Recursion Confusion by tobyink
in thread Recursion Confusion by live4tech

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