/**
* A sensible definition of {@link #removeAll} in terms of {@link #iterator}, using the iterator's
* {@code remove} method. If you override {@link #iterator}, you may wish to override {@link
* #removeAll} to forward to this implementation.
*
* @since 7.0
*/
protected boolean standardRemoveAll(Collection<?> collection) {
return Iterators.removeAll(iterator(), collection);
}
@Override
public boolean removeAll(Collection<?> c) {
synchronized (mutex) {
return Iterators.removeAll(delegate().iterator(), c);
}
}
/**
* Removes, from an iterable, every element that belongs to the provided collection.
*
* <p>This method calls {@link Collection#removeAll} if {@code iterable} is a collection, and
* {@link Iterators#removeAll} otherwise.
*
* @param removeFrom the iterable to (potentially) remove elements from
* @param elementsToRemove the elements to remove
* @return {@code true} if any element was removed from {@code iterable}
*/
public static boolean removeAll(Iterable<?> removeFrom, Collection<?> elementsToRemove) {
return (removeFrom instanceof Collection)
? ((Collection<?>) removeFrom).removeAll(checkNotNull(elementsToRemove))
: Iterators.removeAll(removeFrom.iterator(), elementsToRemove);
}
