Adapts source
to be a Queue<T>
.
Any time the queue would produce an element that is not a T
, the element access will throw.
Any time a T
value is attempted stored into the adapted queue, the store will throw unless the value is also an instance of S
.
If all accessed elements of source
are actually instances of T
, and if all elements stored into the returned queue are actually instance of S
, then the returned queue can be used as a Queue<T>
.
static Queue<T> castFrom<S, T>(Queue<S> source) => new CastQueue<S, T>(source);
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-collection/Queue/castFrom.html