CacheDecorator
Synopsis
CacheDecorator wrap objects to provide cached versions of method calls.
class X def initialize ; @tick = 0 ; end def tick; @tick + 1; end def cached; @cache ||= CacheDecorator.new(self) ; end end x = X.new x.tick #=> 1 x.cached.tick #=> 2 x.tick #=> 3 x.cached.tick #=> 2 x.tick #=> 4 x.cached.tick #=> 2
You can also use to cache a collections of objects to gain code speed ups.
points = points.collect{|point| Cache.cache(point)}
After our algorithm has finished using points, we want to get rid of these Cache objects. That‘s easy:
points = points.collect{|point| point.self }
Or if you prefer (it is ever so slightly safer):
points = points.collect{|point| Cache.uncache(point)}
Authors
- Erik Veenstra
- Thomas Sawyer
Copying
Copyright (c) 2006 Erik Veenstra
Ruby License
This module is free software. You may use, modify, and/or redistribute this software under the same terms as Ruby.
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.
Constants
Cache | = | CacheDecorator |
These are for backward compatibility (to be DEPRECATED) | ||
CacheDelegator | = | Cache |