fix again

brainboxdotcc · Aug 25, 2023 · 44210bf · 44210bf
1 parent e7be36c
commit 44210bf
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/include/dpp/event_router.h b/include/dpp/event_router.h
@@ -212,7 +212,7 @@ template<class T> class event_router_t {
 	 * detach the listener from the event later if necessary.
 	 */
 	template <typename F>
-	requires (utility::callable_returns<F, dpp::job, T> || utility::callable_returns<F, void, T>)
+	requires (utility::callable_returns<F, dpp::job, const T&> || utility::callable_returns<F, void, const T&>)
 	event_handle operator()(F&& fun) {
 		return this->attach(std::forward<F>(fun));
 	}
@@ -227,7 +227,7 @@ template<class T> class event_router_t {
 	 * detach the listener from the event later if necessary.
 	 */
 	template <typename F>
-	requires (utility::callable_returns<F, dpp::job, T> || utility::callable_returns<F, void, T>)
+	requires (utility::callable_returns<F, dpp::job, const T&> || utility::callable_returns<F, void, const T&>)
 	event_handle attach(F&& fun) {
 		std::unique_lock l(lock);
 		event_handle h = next_handle++;
@@ -245,7 +245,7 @@ template<class T> class event_router_t {
 	 * detach the listener from the event later if necessary.
 	 */
 	template <typename F>
-	std::enable_if_t<utility::callable_returns_v<F, void, T>, event_handle> operator()(F&& fun) {
+	std::enable_if_t<utility::callable_returns_v<F, void, const T&>, event_handle> operator()(F&& fun) {
 		return this->attach(std::forward<F>(fun));
 	}
 
@@ -259,7 +259,7 @@ template<class T> class event_router_t {
 	 * detach the listener from the event later if necessary.
 	 */
 	template <typename F>
-	std::enable_if_t<utility::callable_returns_v<F, void, T>, event_handle> attach(F&& fun) {
+	std::enable_if_t<utility::callable_returns_v<F, void, const T&>, event_handle> attach(F&& fun) {
 		std::unique_lock l(lock);
 		event_handle h = next_handle++;
 		dispatch_container.emplace(h, std::forward<F>(fun));