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cache the return value of a method From http://code.activestate.com/recipes/577452-a-memoize-decorator-for-instance-methods/ This class is meant to be used as a decorator of methods. The return value from a given method invocation will be cached on the instance whose method was invoked. All arguments passed to a method decorated with memoize must be hashable. If a memoized method is invoked directly on its class the result will not be cached. Instead the method will be invoked like a static method: class Obj(object): @memoize def add_to(self, arg): return self + arg Obj.add_to(1) # not enough arguments Obj.add_to(1, 2) # returns 3, result is not cached
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x.__init__(...) initializes x; see x.__class__.__doc__ for signature
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