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Postings from August 2001
Garrett Goebel wrote:
> From: Dave Mitchell [mailto:davem@fdgroup.co.uk]
> > 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->();
>
> X
> Y
> Y
Yes, exactly. It would be a violation of the lexical scoping
rules for $x and $y to print anything differently.
> You forgot the other example that someone raised:
>
> { my $x = 'X'; *h = sub { $H = sub {pr $h} }}
> h(); $H->();
>
> Which prints:
>
> Z
Did you mean this?
{ my $z = 'Z'; *h = sub { $H = sub {pr $z} }}
h(); $H->();
Then I agree.
- Ken
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