Re: [ID 20010702.002] perldata documents dubious hash slice

Nicholas Clark <nclark@copernicusgbs.com> wrote
> Surely this isn't a good example, as (I think - what am I missing?)
>
>     foreach (values %hash) {
>	...
>     }

What you are missing is that you hadn't tried it on an older Perl:

perl5.005 -lw
%h = (a => 1, b => 2);
foreach (values %h) { $_++ };
print %h;
__END__
a1b2

perl5.6.0 -lw
%h = (a => 1, b => 2);
foreach (values %h) { $_++ };
print %h;
__END__
a2b3


So it used to be an essential trick, now obsolete.

Perhaps the example should be commented "This was necessary in Perl
versions < 5.6" ?


Mike Guy

• Re: Smoke [5.9.4] 28590 FAIL(m) hp-ux 10.20 (PA-2.0/32/1 cpu) by H.Merijn Brand
• [ID 20010702.002] perldata documents dubious hash slice by Nicholas Clark
• Re: [ID 20010702.002] perldata documents dubious hash slice by Mike Guy
• Re: [ID 20010702.002] perldata documents dubious hash slice by Nicholas Clark