NAME
Object::Attribute::Cached - cache complex object attributes
SYNOPSIS
use Object::Attribute::Cached
attribute1 => sub { shift->some_complex_task },
squared => sub { shift->{num} ** 2 },
uptosquare => sub { 1 .. shift->squared },
squaredsquared => sub { map $_ ** 2, shift->uptosquare };
DESCRIPTION
This provides a simple interface to writing simple caching attribute
methods.
It avoids having to write code like:
sub parsed_query {
my $self = shift;
$self->{_cached_parsed_query} ||= $self->parse_the_query;
return $self->{_cached_parsed_query};
}
Instead you can just declare:
use Object::Attribute::Cached
parsed_query => sub { shift->parse_the_query };
CAVEATS
We try to allow an attribute to be a lists or hash and examine caller()
to try to do the right thing. This will work for simple cases, but if
you're running into problems, or trying to do something more complex,
it's always safer to use references instead.
AUTHOR
Tony Bowden
BUGS and QUERIES
Please direct all correspondence regarding this module to:
[email protected]
COPYRIGHT AND LICENSE
Copyright (C) 2003-2005 Kasei
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License; either version 2 of the License,
or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE.
