On 05/30/17 11:13, Jan-Peter Voigt wrote:
I doubt that checking all characters in the string are in the range '0'-'9' is faster then string->number.
Don't forget the optional leading hyphen, base specifiers (#x, #o, #d, #b), etc.
However, do keep in mind that (integer? (string->number x)) accepts "2/2", "1.0", "1e10", and even "1.0000000000000001" as integers, which might not be what you want.
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