Form validation

Validations.dart

static bool isValidEmail(String email) {
    return RegExp(r"^[a-zA-Z0-9.a-zA-Z0-9.!#$%&'*+-/=?^_`{|}~]+@[a-zA-Z0-9]+\.[a-zA-Z]+").hasMatch(email);
}

static bool isValidName(String name) {
    return !name.contains(RegExp(r"[0-9!@#$%^&*()_+\-=\[\]{};':\\|,.<>\/?]"));
  }

  static bool isSpecialCharacter(String name) {
    return RegExp(r"[!@#$%^&*()_+\-=\[\]{};':\\|,.<>\/?]").hasMatch(name);
  }

  static bool isNumber(String name) {
    return RegExp(r"[0-9]").hasMatch(name);
  }

  static bool isUppercase(String name) {
    return RegExp(r"[A-Z]").hasMatch(name);
  }

  static bool isLowercase(String name) {
    return RegExp(r"[a-z]").hasMatch(name);
  }