7 Card Hand Evaluators

[Mogobu The Fool]

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I'm assuming the only benefit to using the perfect hash version faster lookup creation? (I just used Cactus Kev's source).


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No, the perfect hash version's advantage comes from faster actual lookups... The last step in Cactus Kev's approach, after using the product of primes to establish a unique code which represnts any version of a 7-card holding, is to look up that product in a table. In Cactus Kev's code, the lookup is done via binary search. In Senzee's version, doing a hash and lookup is considerable faster on average - resulting in evals about 2.7 times faster in Senzee's tests.