How can I tell when a string is in fact a number?

Mon Nov 6 15:06:50 EST 2000

What numeric system uses two dots? ;)

On Mon, 6 Nov 2000, Joshua Muskovitz wrote:

> Bzzt.  This fails on "345.67.89".  Try again.
> 
> -- josh
> 
> 
> 
> 
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