http://www.perlmonks.org?node_id=475350


in reply to Annoying warnings...

I think that the solution you imply of turning them off locally is the preferred one. Leave warnings on during development, and when you are sure you want to allow $foo to be undefined, 

{
    no warnings 'uninitialized';     # edit - corrected tag
    print "Say something about $foo.\n";
}

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That is a pain, as you say, but it makes you ask whether you really need the behavior you're warned of.

Most warnings (not all!) represent some kind of useless behavior in a program. Cleaning them up nearly always improves the code.

After Compline,
Zaxo

In Section Seekers of Perl Wisdom