BTW, the static trick only works with if 0; and for ();

Not so. Observe:

#!/usr/local/bin/perl -l

sub horror { 
    my $foo if "reset" eq shift; 
    print ++$foo;
}

horror($_) for qw(foo bar baz reset bing bang boom);
__END__
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[download]

(Not that the sub name is intended as an editorial comment, or anything... <grin>)

The nasty part is just that the cleanup (resetting $foo to undef) takes place at the end of the iteration in which my $foo is actually executed (which isn't exactly what you'd expect from a "reset" argument, but that's what you get with silly example code).


If God had meant us to fly, he would *never* have given us the railroads.
    --Michael Flanders

In reply to Static variables (oh, the horror()) by ChemBoy
in thread Never lock $0 inside of a BEGIN block by demerphq

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