Method indexOfImpl

output/java_guava/1.4.18/Lists.java:1075–1087

An implementation of List#indexOf(Object).

(List<?> list, @Nullable Object element)

  static int indexOfImpl(List<?> list, @Nullable Object element) {
           if (list instanceof RandomAccess) {
             return indexOfRandomAccess(list, element);
           } else {
             ListIterator<?> listIterator = list.listIterator();
             while (listIterator.hasNext()) {
               if (Objects.equal(element, listIterator.next())) {
                 return listIterator.previousIndex();
               }
             }
             return -1;
           }
  }

  private static int indexOfRandomAccess(List<?> list, @Nullable Object element) {
    int size = list.size();