Because of the context issues you mentioned, I'd use a blank return; instead of return undef;

I hate you! Functions that are expected to return a scalar should not suddenly returning nothing. It rarely has any advantage, and it fails very poorly in common situations. 

f( name => get_name(), foo => 1 );

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In reply to Re^2: A question about method return values and error checking by ikegami
in thread A question about method return values and error checking by wee

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