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I’m a little confused by the ~ operator. Code goes below:
a = 1
~a #-2
b = 15
~b #-16
How does ~ do work?
I thought, ~a would be something like:
0001 = a
1110 = ~a
why not?
You are exactly right. It’s an artifact of two’s complement integer representation.
In 16 bits, 1 is represented as
0000 0000 0000 0001. Inverted, you get1111 1111 1111 1110, which is -2. Similarly, 15 is0000 0000 0000 1111. Inverted, you get1111 1111 1111 0000, which is -16.In general,
~n = -n - 1