Note that with a properly crafted regex, the timing difference between it and substr is pretty small; limiting the scope of bigint and using the look-ahead regex from Re^2: Print Number With Implied Decimal Point:
          Rate  regex substr regex2
regex   2926/s     --   -78%   -80%
substr 13087/s   347%     --   -11%
regex2 14782/s   405%    13%     --

[download]
 Update: see Re^2: Print Number With Implied Decimal Point

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re^3: Print Number With Implied Decimal Point by kennethk
in thread Print Number With Implied Decimal Point by j355ga

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