Irregular

0.6.8

RegEx/Decimals.regex.txt

                                # Matching any series of decimals is deceptively complicated

(?<IsNegative>\-)?                # It might be start with a -

(?:(?>                            # Then it can be either: 

    (?<Characteristic>\d+)        # One or more digits (the Characteristic)

    (?:\.(?<Mantissa>\d+)){0,1}   # followed by a period and one or more digits (the Mantissa)

    |                             # Or it can be

    (?:\.(?<Mantissa>\d+))        # just a Mantissa      

))

(?:

    E

    (?<Exponent>

        [+-]\d+

    )

)?