Skip Montanaro skip at pobox.com
Fri Dec 19 16:08:12 EST 2003

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    jcb> This is what I have, but it does not work.

    jcb> def bitIndexGenerator(mask, index=0):
    jcb>     if mask == 0: return
    jcb>     elif mask & 0x1: yield index
    jcb>     bitIndexGenerator(mask >> 1, index+1)

Try:

    def bitIndexGenerator(mask, index=0):
        if mask == 0:
            return
        elif mask & 0x1:
            yield index
        for index in bitIndexGenerator(mask >> 1, index+1):
            yield index

Skip

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