I assume you test for definedness (as you mention it in the title) and not for 0 or ''. In that case:

use perl 5.10;

$val= return1() // '' . return2();

[download]

It might be necessary to add parens if . binds stronger than //

In reply to Re: append return if defined else not by jethro
in thread append return if defined else not by tart

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