def memoize_method(*method_ids)
method_ids.each do |method_id|
method_id = method_id.to_s.to_sym
orig_method = instance_method(method_id)
__send__(:define_method, method_id) do |*args|
unless mc = ::Module.__memoize_cache__[__id__]
mc = ::Module.__memoize_cache__[__id__] ||= {}
ObjectSpace.define_finalizer(self, ::Module.__memoize_cache_delete__)
end
if mc.key?(method_id) and result = mc[method_id][args]
result
else
(mc[method_id] ||= {})[args] = result = orig_method.bind(self).call(*args)
$DEBUG and warn "#{self.class} cached method #{method_id}(#{args.inspect unless args.empty?}) = #{result.inspect} [#{__id__}]"
end
result
end
end
end