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Postings from July 2006
* Bart Lateur <bart.lateur@pandora.be> [2006-07-13 11:30]:
> On Thu, 13 Jul 2006 04:29:38 -0400, Chasecreek Systemhouse wrote:
> >What the advantage the above over this:
> >
> >perl -le 'print time'
>
> Oh come on, you asked how to use @{[]}.
It’s a legitimate question.
Another use case:
for( qw( 1 2 3 ) ) {
$_ = $_ * $_; # contrived
print "square: $_\n";
}
__END__
Modification of a read-only value attempted at foo line 2.
as opposed to
for( @{[ qw( 1 2 3 ) ]} ) {
$_ = $_ * $_; # contrived
print "square: $_\n";
}
__END__
square: 1
square: 4
square: 9
In other words it’s also useful when you need to break aliasing
to make sure you’re operating on a modifiable copied scalar.
Regards,
--
Aristotle Pagaltzis // <http://plasmasturm.org/>
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