The logic looks good to me, but I prefer this slightly more readable implementation: 
my $self = shift;
my $file = $self->{'file'} = shift || $self->{'file'};

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-Ton
-----
Be bloody, bold, and resolute; laugh to scorn
The power of man...

In reply to Re: choosing and/or overriding defaults for a sub argument by ton
in thread choosing and/or overriding defaults for a sub argument by princepawn

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