I tried defining $moosie, then never using it, to see if it would throw a warning, but it didn't. I thought that it used to do that? Maybe I'm wrong. I am using -w....
I'd like to know this so I can clean up my programs.
From MonkDan at UI:
$ perl -V:version version='5.8.3';
$ perl -e '$moosie = 42'
$ perl -we '$moosie = 42' Name "main::moosie" used only once: possible typo at -e line 1.
$ perl -We '$moosie = 42' Name "main::moosie" used only once: possible typo at -e line 1.
$ perl -We 'my $moosie = 42'
It looks like if you use `my', you can't find out which ones you aren't using.

In reply to How do I find out which variables I'm not using? by amyoungil

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