regular expression in dart

main.dart

void main() {
  final regex = RegExp(r'^[!-~]+$');  // Raw string for the regex

  List<String> validStrings = [
    r'Hello123!',       // Raw string
    r'@Flutter_Dart#',  // Raw string
    r'ABCdef123&*()',   // Raw string
    r'1234567890',      // Raw string
    r'!@#$%^&*()',      // Raw string
    r'~`<>?/|\',        // Raw string
    r'hello world',
    r'',
  ];

  for (var str in validStrings) {
    print('$str is valid: ${regex.hasMatch(str)}');
  }
}