Method stream

guava/src/com/google/common/collect/Streams.java:66–70

Returns a sequential {@link Stream} of the contents of {@code iterable}, delegating to {@link Collection#stream} if possible.

(Iterable<T> iterable)

   * Collection#stream} if possible.
   */
  public static <T extends @Nullable Object> Stream<T> stream(Iterable<T> iterable) {
    return (iterable instanceof Collection)
        ? ((Collection<T>) iterable).stream()
        : StreamSupport.stream(iterable.spliterator(), false);
  }

  /**
   * Returns {@link Collection#stream}.