<programming> (Or "hash clash") When two different keys hash to the same value, i.e. to the same location in a hash table.
ESR once asked a friend what he expected Berkeley to be like. The friend replied, "Well, I have this mental picture of naked women throwing Molotov cocktails, but I think that's just a collision in my hash tables."
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Nearby terms: hash bucket « hash character « hash coding « hash collision » hash function » hashing » hash table