isAvailableCharacter static method

bool isAvailableCharacter(
  1. int? charCode
)

Implementation

static bool isAvailableCharacter(int? charCode) {
  if (charCode != null && charCode == charUnderscore ||
      (charCode! >= 48 && charCode <= 57) ||
      (charCode >= 65 && charCode <= 90) ||
      (charCode >= 97 && charCode <= 122)) {
    return true;
  }

  return false;
}