single property

  1. @override
GemParameter get single
inherited

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
T get single {
  if (length != 1) {
    throw StateError('Not a single element');
  }
  return first;
}