kcenon::common::concepts::EventHandler Concept Reference

A callable that can handle events of a specific type. More...

#include <event.h>

Concept definition

template<typename H, typename E>
concept kcenon::common::concepts::EventHandler =  std::invocable<H, const E&> &&
    std::is_void_v<std::invoke_result_t<H, const E&>>

Detailed Description

A callable that can handle events of a specific type.

Event handlers receive events by const reference and return void. They should not throw exceptions to avoid disrupting event dispatch.

Example usage:

template<EventType E, EventHandler<E> H>
uint64_t subscribe(H&& handler) {
    return event_bus.subscribe<E>(std::forward<H>(handler));
}

Definition at line 71 of file event.h.