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--On Monday, December 21, 2009 10:27:50 +0000 Michael Kay
<mike@xxxxxxxxxxxx> wrote:
A phone number should not really be treated as a number: leading zeroes are significant, and arithmetic operations are meaningless. It's really just a string whose component characters happen to be digits. The first character of a phone number can be a '+'. Unlike a conventional numeric context, omitting the '+' if it should be there or adding it if it should not makes a big difference.
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