Cache-LRU

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lib/Cache/LRU.pm  view on Meta::CPAN

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my ($self, $key, $value) = @_;
 
my $entries = $self->{_entries};
 
if (my $old_value_ref = $entries->{$key}) {
    $$old_value_ref = undef;
}
 
# register
my $value_ref = \$value;
Scalar::Util::weaken($entries->{$key} = $value_ref);
$self->_update_fifo($key, $value_ref);
 
# expire the oldest entry if full
while (scalar(keys %$entries) > $self->{size}) {
    my $exp_key = shift(@{$self->{_fifo}})->[0];
    delete $entries->{$exp_key}
        unless $entries->{$exp_key};
}
 
$value;



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