single property

String single

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.

Source

String get single {
  int len = this.length;
  if (len == 1) {
    return _nativeIndexedGetter(0);
  }
  if (len == 0) throw new StateError("No elements");
  throw new StateError("More than one element");
}

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-html/DomStringList/single.html