note
tobyink
<p>You are correct. I was under the impression that a reference to <c>@_</c> behaved differently than a reference to another localized array, once the localization went out of scope.</p>
<p>But the following example appears to show they behave the same...</p>
<code>
use strict;
use Data::Dumper;
our @X;
my ($underscore, $scissors);
@_ = (1..3);
@X = (1..3);
sub foo {
local @X = (4..6);
$underscore = \@_;
$scissors = \@X;
}
foo(4..6);
print Dumper($underscore, $scissors);
</code>
<p>So (like <c>$_</c>) <c>@_</c> is just a global array that gets localized by certain control structures. (In particular, <c>sub</c>.)</p>
<!-- Node text goes above. Div tags should contain sig only -->
<div class="pmsig"><div class="pmsig-757127">
<small><small>
<tt>perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'
</tt></small></small>
</div></div>
1005679
1005740