Digit.min constructor
Constrains the input data to the digits 0-9
and its length (number of
digits) to a minimum of min
digits.
min
the minimum number of digits; it must be > 0.
mal
"malformed", the error message if non-digit characters are found;
the default value is 'non-digit character(s) found'.
short
the error message if the input length is shorter than min
digits.
Implementation
Digit.min(int min, {String? mal, String? short})
: assert(min > 0),
_valDig = _DigitImpl(mal, Len.min(min, short: short));