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Postings from September 2000
In article <E13Unhe-0000uo-00@draco.cus.cam.ac.uk>,
Mike Guy <mjtg@cam.ac.uk> wrote:
> There seem to be funny scoping effects with pos():
>
> #perl -wl
> $x = 'a' x 200 . 'b';
> { $x =~ /b/g; };
> print pos $x;
> { $x =~ /b/g; $y = pos $x };
> print "$y ", pos $x;
> print do { $x =~ /b/g; pos $x };
> __END__
> 201
> Use of uninitialized value in concatenation (.) or string at - line 5.
> Use of uninitialized value in print at - line 5.
>
> 201
Nothing to do with scoping. The second match fails (only one b in $x).
[D:\home\sthoenna]perl -wl
$x = ('a'x200).'b';
$x =~ /b/g; print pos $x;
$x =~ /b/g; print pos $x;
$x =~ /b/g; print pos $x;
__END__
201
Use of uninitialized value in print at - line 3.
201
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