Five-minute Multimethods in Python

Re:Five-minute Multimethods in Python by yummyfajitas on Wednesday December 07, 2011 @09:25AM (#3323867)

Now it's a single value:

    case [typeof(X) for x in X] of:
        [int, int]:
            ...
        [int, float]:
            ...

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Re:Five-minute Multimethods in Python by icebraining on Wednesday December 07, 2011 @09:40AM (#3323918)

    { (int, int): methodWithTwoInts,
       (int, float): methodsWithIntAndFloat,
       ...
    }[  tuple([typeof(x) for x in X])  ]()

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Re:Five-minute Multimethods in Python by adobriyan on Wednesday December 07, 2011 @09:49AM (#3323956)

Actually this is better that switch (or whatever).

Some advanced dispatch code can notice that some tuples are dispatched more often that the rest and can check for them first.

Ditto for dict lookup.

But this would unexpected for switch code.

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