I know the last calculation in a subroutine is automatically the return value but why does 'unless' evaluate differently than 'if not'? Are they not the same? Example: 
sub testUnless {
     my $v = 'Navidson';
     unless ( $v ) {}; # returns 'Navidson'
}
sub testIfNot {
    my $v = 'Holloway';
    if ( ! $v ) {}; # returns nothing
}

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In reply to unless versus if ( ! ) inside a subroutine by Wheeler

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