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Postings from August 2001
Ken Fox <kfox@vulpes.com> wrote:
> You really need to learn what a closure is. There's a very nice book
> called "Structure and Interpretation of Computer Programs" that can
> give you a deep understanding. **
Quite possibly I do. Anyway, I've now got the book on order :-)
> You're speaking in Perl implementation terms. I've already told you
> that if Perl acts the way you say it does, then Perl has buggy
> closures. You don't need to explain a bug to know that one exists!
Okay, to humour me for a mo', what should the following 2 examples
output if Perl were doing the "right" thing?
sub pr { print $_[0] || 'undef', "\n" }
{ my $x = 'X'; sub f { $F = sub {pr $x} }}
f(); $F->();
{ my $y = 'Y'; sub g { pr $y; $G = sub {pr $y} }}
g(); $G->();
Dave.
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