Method indexOf

output/java_guava/1.4.17/Iterators.java:770–779

Returns the index in iterator of the first element that satisfies the provided predicate, or -1 if the Iterator has no such elements. More formally, returns the lowest index i such that predicate.apply(Iterators.get(iterator, i)) returns true, or {

(Iterator<T> iterator, Predicate<? super T> predicate)

  public static <T> int indexOf(Iterator<T> iterator, Predicate<? super T> predicate) {
    checkNotNull(predicate, "predicate");
    for (int i = 0; iterator.hasNext(); i++) {
      T current = iterator.next();
      if (predicate.apply(current)) {
        return i;
      }
    }
    return -1;
  }

  /**
   * Returns a view containing the result of applying {@code function} to each