dmad @programming.dev
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[Meme] Swapping integers in Python 5 0
xor has the property x ^ x = 0, and x ^ 0 = x. So, x ^ x ^ y = y
a' = a ^ b
b' = b ^ a' = b ^ (a ^ b) = a
a'' = (a ^ b) ^ a = b
This is pretty clever, I've never seen this for a swap.
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