示例#1
1
 @Override
 default <U> Tree<Tuple2<T, U>> zipAll(Iterable<U> that, T thisElem, U thatElem) {
   Objects.requireNonNull(that, "that is null");
   if (isEmpty()) {
     return Iterator.ofAll(that).map(elem -> Tuple.of(thisElem, elem)).toTree();
   } else {
     final java.util.Iterator<U> thatIter = that.iterator();
     final Tree<Tuple2<T, U>> tree = ZipAll.apply((Node<T>) this, thatIter, thatElem);
     if (thatIter.hasNext()) {
       final Iterable<Node<Tuple2<T, U>>> remainder =
           Iterator.ofAll(thatIter).map(elem -> Tree.of(Tuple.of(thisElem, elem)));
       return new Node<>(tree.getValue(), tree.getChildren().appendAll(remainder));
     } else {
       return tree;
     }
   }
 }
示例#2
1
 @Override
 default Tree<Tuple2<T, Integer>> zipWithIndex() {
   return zip(Iterator.from(0));
 }