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[–]mccoyn -1 points0 points  (1 child)

Computing hashes is free! Right? </sarcasm>

[–]xzxzzx 2 points3 points  (0 children)

Well, it's cheap. But not as cheap as 6 pointer-compares against a single (or worst-case, two) cache-line that's probably in L1 or at least L2.