24 lines
553 B
C++
24 lines
553 B
C++
/* @file callback_concept.hpp
|
|
*
|
|
* author: Roland Conybeare, Aug 2025
|
|
*/
|
|
|
|
namespace xo {
|
|
namespace fn {
|
|
/** @concept callback_concept
|
|
* @brief Concept for functors that can be used with @ref CallbackSetImpl
|
|
*
|
|
**/
|
|
template <typename Callback>
|
|
concept callback_concept = requires(Callback cb)
|
|
{
|
|
// no constraints on how callback is invoked.
|
|
|
|
{ cb.notify_add_callback() };
|
|
{ cb.notify_remove_callback() };
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
/* callback_concept.hpp */
|