http://qs321.pair.com?node_id=149745


in reply to Re: How to deal with undefined returned variables.
in thread How to deal with undefined returned variables.

I take it that the difference between // and || is the difference between testing truthfulness and testing definedness.

Hence there is not difference between $a // $b and $a || $b unless $a is 0 or "".

It doesn't sound that useful to me.