note
tobyink
<p>In a standard Perl hash, a key can only have one value. (Though that value could be a reference to an array.)</p>
<code>
# checking if this key-value pair exists
my ($key, $value) = ("foo", "123");
# ... in this hash
my %hash = (
foo => "123",
bar => "456",
);
if (exists $hash{$key} and $hash{$key} eq $value) {
print "key-value pair exists\n";
}
</code>
<!-- Node text goes above. Div tags should contain sig only -->
<div class="pmsig"><div class="pmsig-757127">
<small><small>
<tt>perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'
</tt></small></small>
</div></div>
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