/** {@inheritDoc} */
public boolean retainAll(TDoubleCollection collection) {
if (this == collection) {
return false;
}
boolean modified = false;
TDoubleIterator iter = iterator();
while (iter.hasNext()) {
if (!collection.contains(iter.next())) {
iter.remove();
modified = true;
}
}
return modified;
}
@Override
public boolean contains(double o) {
synchronized (mutex) {
return c.contains(o);
}
}