Java Collections.mapKeys示例

示例#1

文件： TreeMap.java 项目： enelson/javaslang

 @Override
 public <K2> TreeMap<K2, V> mapKeys(
     Function<? super K, ? extends K2> keyMapper,
     BiFunction<? super V, ? super V, ? extends V> valueMerge) {
   final Comparator<K2> comparator = naturalComparator();
   return Collections.mapKeys(this, TreeMap.<K2, V>empty(comparator), keyMapper, valueMerge);
 }