My answer does not depend on what "false" values might be returned: 

my $val= return1() || '';
$val .= return2() || '';

# or

my $val= join '',
    return1() || '',
    return2() || '';

[download]

- tye        

In reply to Re: append return if defined else not (or) by tye
in thread append return if defined else not by tart

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