Method operator()

docopt_private.h:61–63

	struct PatternPointerEquality {
		template <typename P1, typename P2>
		bool operator()(std::shared_ptr<P1> const& p1, std::shared_ptr<P2> const& p2) const {
			return p1->hash()==p2->hash();
		}
		template <typename P1, typename P2>
		bool operator()(P1 const* p1, P2 const* p2) const {
			return p1->hash()==p2->hash();