Ah, but if you simply do something like: 

BEGIN {
    eval "sub DEBUG() {" .
        ( $ENV{DEBUG} ? "1" : "0" ) . "}";
}
# ...
    if(  DEBUG  ) {
        code here;
    }
    warn "Stuff"   if  DEBUG;

[download]
then, when debugging is not turned on, the conditional debug code is actually eliminated by the Perl optimizer so that it doesn't take up memory and the "if" conditional never even gets run!

Update: Yes, bbfu's idea is even better. (:

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

In reply to (tye)Re: Conditionally executing debugging code by tye
in thread Conditionally executing debugging code by ariels

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