operators

[Chompy]

How do this operators work? I've seen them around, and I've wondered how they work

Bitwise-Shift left        a << b
Bitwise-Shift right       a >> b
Bitwise-Invert            ~a
Bitwise-Xor               a xor b (operator ^ already used for power)
Power Assignment          a ^= b
Shift Left Assignment     a <<= b
Shift Right Assignment    a >>= b
(Listed on the Wiki)

That are some of the operators I don't seem to understand,
anyone can help me with those?

AND, what is the fully different beetween "=" and "=="?