def cached(self, func, *args, **kwargs):
"""
>>> r = RamLRUCache({'size' : 5})
>>> r._cache = {'a': {'([1, 2], {})': {'{}': 3}}}
>>> r.cached('a',[1, 2], {})
3
>>> r._order
['a||(([1, 2], {}), {})||{}']
>>> r._cache = {'a': {'([1, 2], {})': {'{}': 3}}, 'c': {'([1, 3], {})': {'{}': 3.1400000000000001}}, 'b': {'([1, 3], {})': {'{}': 66}}}
>>> r._order = ['a||(([1, 2], {}), {})||{}', 'b||(([1, 3], {}), {})||{}', 'c||(([1, 3], {}), {})||{}']
>>> r._order
['a||(([1, 2], {}), {})||{}', 'b||(([1, 3], {}), {})||{}', 'c||(([1, 3], {}), {})||{}']
>>> r.cached('a',[1, 2], {})
3
>>> r._order
['b||(([1, 3], {}), {})||{}', 'c||(([1, 3], {}), {})||{}', 'a||(([1, 2], {}), {})||{}']
"""
key = self._computeKey(func, args, kwargs )
if key in self._order:
self._order.remove(key)
self._order.append(key)
return RamCache.cached(self, func, *args, **kwargs)
