Usually when writing debug code, I will use this type of statement (for just the reason above)...
use constant DEBUG => 1;
...
...
warn "Foo" if DEBUG;
or
use constant DEBUG => 1;
...
...
my $debugsub = DEBUG ? { warn @_ } : {}; #need to fix stack trace...
...
...
&$debugsub(foobar);
Allows turning it off in one location.
Just my $0.02.
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