Sha256: c54ef9d3c5682f04b93bc43c63dbed49d98c198edc58264a5f1eb5e821c4f4e1
Contents?: true
Size: 1.78 KB
Versions: 105
Compression:
Stored size: 1.78 KB
Contents
package Attribute::Memoize;
use warnings;
use strict;
use Attribute::Handlers;
our $VERSION = sprintf "%d.%02d", q$Revision: 1.2 $ =~ /(\d+)/g;
sub UNIVERSAL::Memoize :ATTR(CODE) {
my ($pkg, $symbol, $options) = @_[0,1,4];
$options = [ $options || () ] unless ref $options eq 'ARRAY';
require Memoize;
Memoize::memoize($pkg . '::' . *{$symbol}{NAME}, @$options);
}
"Rosebud"; # for MARCEL's sake, not 1 -- dankogai
__END__
=head1 NAME
Attribute::Memoize - A Memoize attribute
=head1 SYNOPSIS
use Attribute::Memoize;
sub fib :Memoize {
my $n = shift;
return $n if $n < 2;
fib($n-1) + fib($n-2);
}
$|++;
print fib($_),"\n" for 1..50;
=head1 DESCRIPTION
This attribute makes it slightly easier (and modern) to memoize a
function by providing an attribute, C<:Memoize> that makes it
unnecessary for you to explicitly call C<Memoize::memoize()>.
Options can be passed via the attribute per usual (see the
C<Attribute::Handlers> manpage for details, and the C<Memoize>
manpage for information on memoizing options):
sub f :Memoize(NORMALIZER => 'main::normalize_f') {
...
}
However, since the call to C<memoize()> is now done in a different
package, it is necessary to include the package name in any function
names passed as options to the attribute, as shown above.
=head1 BUGS
None known so far. If you find any bugs or oddities, please do inform the
author.
=head1 AUTHOR
Marcel Grunauer, <marcel@codewerk.com>
Dan Kogai, C<< <dankogai+cpan at gmail.com> >>
=head1 COPYRIGHT
Copyright 2001 Marcel Grunauer. All rights reserved.
Copyright 2006 Dan Kogai. All rights reserved.
This library is free software; you can redistribute it and/or modify
it under the same terms as Perl itself.
=head1 SEE ALSO
perl(1), L<Attribute::Handlers>, L<Memoize>
=cut
Version data entries
105 entries across 38 versions & 1 rubygems