But your code generates warnings when comparing $verify to 'yes' if it's also undef, unless you're absolutely sure that your code doesn't fall out the bottom. I'd write that like this, if you wanna flatten the nesting: 
if (not defined $foo) {
  ... undef ...
} elsif ($foo eq 'yes') {
  ... yes ...
} else {
  ... everything else ...
}

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-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

In reply to •Re: Re^2: Checking for the existence of a passed parameter. by merlyn
in thread Checking for the existence of a passed parameter. by chriso

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