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  1. or download this
    use strict;
use Scope::Guard;
...
$code->();
undef $code;
warn "end";
  2. or download this
    end at /tmp/sample.pl line 12.
destroyed at /tmp/sample.pl line 7 during global destruction.
  3. or download this
    use strict;
use Scope::Guard;
...
$code->();
undef $code;
warn "end";
  4. or download this
    destroyed at /tmp/sample.pl line 7.
end at /tmp/sample.pl line 12.