single property

  1. @override
E single
override

Checks that this iterable has only one element, and returns that element.

Throws a StateError if this is empty or has more than one element. This operation will not iterate past the second element.

Implementation

@override
E get single {
  if (isEmpty) {
    throw _noElements();
  }
  if (length > 1) {
    throw _moreThanOneElement();
  }
  return elementAt(0);
}