Converting a hex string to a number

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Alex Martelli <aleax at aleax.it> wrote:
AM# me wrote:
AM#         ...
>> Like this solution.  Is there a way to use that long as hex, so bit
>> operations can be done on it piecewise?  Slice a byte, then xor it or
>> and it, and put it back?

AM# Longs, like ints and other kinds of numbers, are immutable -- so each
AM# time you change even one bit you're allocating a new one and copying
AM# all the rest.  Use an array.array with a typecode of 'B' (unsigned bytes),
AM# it may prove substantially better-performing as it's mutable.


AM# Alex

thanks,

stan