sub make_closures {
   my $j = 0;
   my @closures;

   while (++$j < 7) {
       my $i = $j;
       push (@closures, sub {print $i;});
   }
   return @closures;
}

foreach my $sub (&make_closures) {
   &$sub;
}

[download]

This seems to work. I think the problem is that $j isn't going out of scope for each of the closures... so they're all pointing to the same address in memory, instead of to new addresses for each iteration.

But I really barely understand closures, so I may be way off base here.

-- Dan

PS - I couldn't get this to run from perl -e without adding the return statement. "Undefined subroutine &main:: called at -e line 13.". Am I missing something?

In reply to Re: Closure Confusion by zigdon
in thread Closure Confusion by Dinosaur

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