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2014-03-23 16:58 GMT+02:00 Thijs Schreijer <>:

> I find it confusing that the operator '~' is used for both 'xor' and 'unary not'.

Think of it this way. Prefix `-` is related to infix `-` by the identity

   -x == 0-x

Prefix `~`, as your examples so clearly demonstrate, is related to infix `~` by

   ~x == (-1)~x