On Fri, Jan 28, 2011 at 9:09 AM, tee chwee liong <tc...@hotmail.com> wrote:
> hi, > > i'm confuse on how does ^ and | mean. When i tried |, i thought it is > addition but 4|4 also give 4? > They're called bitwise operators: http://wiki.python.org/moin/BitwiseOperators + is the addition operator: 4 + 2 == 6 4 + 4 == 8 | is the bitwise OR > >>> 4|2 > 6 > >>> 4|1 > 5 > >>> 4|3 > 7 > >>> 4|4 > 4 > > When i tried ^, looks like subtraction but 2^4 gives 6? > ^ is the bitwise XOR - is subtraction > > >>> 2^3 > 1 > >>> 2^2 > 0 > >>> 2^4^ is the XOR operator > 6 > > Pls help to clear my confusion. thanks. > For more information about bitwise operations, wikipedia is your friend! http://en.wikipedia.org/wiki/Bitwise_operation <http://en.wikipedia.org/wiki/Bitwise_operation>HTH, Wayne
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