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Re: Sorting in-place
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From:
Abigail
Date:
July 31, 2001 12:14
Subject:
Re: Sorting in-place
Message ID:
20010731191033.12551.qmail@foad.org
On Tue, Jul 31, 2001 at 04:00:44PM +0200, Marc A. Lehmann wrote:
>
> The problem comes from the fact that scalars are passed by value (good
> idea usually), and perl implements this by copying (usually a good idea as
> well).
Oh, really?
#!/opt/perl/bin/perl -w
sub foo {$_ [0] ++}
$_ = 1;
foo $_;
print;
__END__
2
Perl passes by reference, not value, as is documented in "man perlsub".
Abigail
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