Merge branch 'dev' into master

include/dpp/coro/async.h

@@ -414,6 +414,11 @@ class async : private detail::async::async_base<R> {
 	using detail::async::async_base<R>::operator=; // use async_base's assignment operator
 	using detail::async::async_base<R>::await_ready; // expose await_ready as public
 
+	/**
+	 * @brief The return type of the API call. Defaults to confirmation_callback_t
+	 */
+	using result_type = R;
+
 	/**
 	 * @brief Construct an async object wrapping an object method, the call is made immediately by forwarding to <a href="https://en.cppreference.com/w/cpp/utility/functional/invoke">std::invoke</a> and can be awaited later to retrieve the result.
 	 *

include/dpp/coro/coroutine.h

@@ -232,6 +232,10 @@ class coroutine : private detail::coroutine::coroutine_base<R> {
 	}
 
 public:
+	/**
+	 * @brief The type of the result produced by this coroutine.
+	 */
+	using result_type = R;
 #ifdef _DOXYGEN_ // :))))
 	/**
 	 * @brief Default constructor, creates an empty coroutine.
@@ -334,6 +338,11 @@ class coroutine<void> : private detail::coroutine::coroutine_base<void> {
 	using detail::coroutine::coroutine_base<void>::operator=; // use coroutine_base's assignment operators
 	using detail::coroutine::coroutine_base<void>::await_ready; // expose await_ready as public
 
+	/**
+	 * @brief The type of the result produced by this coroutine.
+	 */
+	using result_type = void;
+
 	/**
 	 * @brief Suspend the current coroutine until the coroutine completes.
 	 *

include/dpp/coro/task.h

@@ -335,6 +335,10 @@ class task : private detail::task::task_base<R> {
 	}
 
 public:
+	/**
+	 * @brief The type of the result produced by this task.
+	 */
+	using result_type = R;
 #ifdef _DOXYGEN_ // :)
 	/**
 	 * @brief Default constructor, creates a task not bound to a coroutine.
@@ -465,6 +469,11 @@ class task<void> : private detail::task::task_base<void> {
 	using detail::task::task_base<void>::cancel; // expose cancel() as public
 	using detail::task::task_base<void>::await_ready; // expose await_ready as public
 
+	/**
+	 * @brief The type of the result produced by this task
+	 */
+	using result_type = void;
+
 	/**
 	 * @brief Suspend the current coroutine until the task completes.
 	 *