addLetters method

CharacterSet addLetters([
  1. CaseType caseType = CaseType.lowerAndUpper
])

Example: var regex = FluentRegex().characterSet(CharacterSet().addLetters()); expect(regex.hasMatch('a'), true); expect(regex.hasMatch('B'), true); expect(regex.hasMatch('3'), false);

Implementation

CharacterSet addLetters([CaseType caseType = CaseType.lowerAndUpper]) {
  if (caseType.hasLower) addRange('a', 'z');
  if (caseType.hasUpper) addRange('A', 'Z');
  return this;
}