Function operator ==

gecode/set/view/singleton.hpp:294–297

  SingletonView::lubAny(const Delta& d) const { return x.any(d); }

  forceinline bool
  operator ==(const SingletonView& x, const SingletonView& y) {
    return x.base() == y.base();
  }

  forceinline bool
  operator !=(const SingletonView& x, const SingletonView& y) {