Greetings, i have been looking for a better way to write a regex for determining if a string is a number, including integers, floating pt numbers, and scientific notation. seems so obfuscated that it has to be wrong. please point out errors, omissions, etc. so far, i have looked at cpan and the perlmonks archive. i have only found regexs for more well-behaved strings. the output i need to parse includes (some of these are ill-formed, but "it's a liven'!": 
1.0
-1.0
.9
9.
-.9
-.4e08
+4.E-08
+.2e+219
2.00001e+9

[download]
the code that i have and not sure about is: 
our $numregex = qr/^
        # may have leading plus or minus
        [-+]?
        # one of these formats must exist
        (?:
          # maybe one or more digits, then decimal, and maybe more dig
+its
          \d+\.?\d*
          # or decimal followed by one or more digits
          |\.\d+
        )
        # optional sci notation
        (?:
          # "e" or "E" and plus or minus, and one, two, or three digit
+s
          [eE][-+]\d{1,3}
        )?
        $/x;

[download]
thank you.

In reply to number regex (incl sci notation) by jim_neophyte

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