http://qs1969.pair.com?node_id=61159


in reply to localization of $_

If you use $_ often as a temporary variable, you should definately use local $_; at the beginning of your subroutines to prevent this exact situation from happening.

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(tye)Re: localization of $_
by tye (Sage) on Feb 28, 2001 at 00:40 UTC

    ...and you can also be defensive and protect yourself from other code that isn't as nice: 

    sub mine {
    local( $_ );
    while(  <FILE>  ) {
        s/this/that/g;
        {
            local( $_ )= $_;
            yours( $_ );
        }
        s/that/this/g;
    }

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    though if you find yourself doing that I strongly suggest you just switch to using my $var instead of $_.

            - tye (but my friends call me "Tye")
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