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Re: What's up with %MY?
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From:
Bryan C . Warnock
Date:
September 6, 2001 05:17
Subject:
Re: What's up with %MY?
Message ID:
01090608132409.32512@wakko.idiocity.nut
On Thursday 06 September 2001 06:16 am, Dave Mitchell wrote:
> One further worry of mine concerns the action of %MY:: on unintroduced
> variables (especially the action of delete).
>
> my $x = 100;
> {
> my $x = (%MY::{'$x'} = \200, $x+1);
> print "inner=$x, ";
> }
> print "outer=$x";
>
> I'm guessing this prints inner=201, outer=200
Perhaps I missed something, but %MY:: refers to my lexical scope, and not my
parents, correct?
Why isn't this inner=201, outer=100?
>
> As for
>
> my $x = 50;
> {
> my $x = 100;
> {
> my $x = (delete %MY::{'$x'}, $x+1);
> print "inner=$x, ";
> }
> print "middle=$x, ";
> }
> print "outer=$x";
>
> If delete 'reexposes' an outer version of that variable, then I'd
> speculate the output would be
>
> inner=51, middle=50, outer=50
Again, I though that %MY:: referred to my current scope, in which case the
delete doesn't do anything. That would make it 101, 100, 50.
Is my understanding incorrect?
--
Bryan C. Warnock
bwarnock@capita.com
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