single property

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

SourceBuffer get single {
 int len = this.length;
 if (len == 1) {
 return JS('SourceBuffer', '#[0]', this);
 }
 if (len == 0) throw new StateError("No elements");
 throw new StateError("More than one element");
}