caf::callback< Signature > Class Template Reference

Describes a simple callback, usually implemented via lambda expression. More...

Inherited by caf::callback_impl< F, Result(Ts...)>.

Related Symbols
(Note that these are not member symbols.)
using	shared_action_ptr = shared_callback_ptr< void()>
	Convenience type alias for an action with shared ownership.
template<class F >
auto	make_callback (F fun)
	Wraps fun into a callback function object.
template<class F >
auto	make_type_erased_callback (F fun)
	Creates a heap-allocated, type-erased callback from the function object fun.
template<class F >
auto	make_shared_type_erased_callback (F fun)
	Creates a heap-allocated, type-erased callback from the function object fun with shared ownership.

Detailed Description

template<class Signature>
class caf::callback< Signature >

Describes a simple callback, usually implemented via lambda expression.

Callbacks are used as "type-safe function objects" wherever an interface requires dynamic dispatching. The alternative would be to store the lambda in a std::function, which adds another layer of indirection and always requires a heap allocation. With the callback implementation of CAF, the object may remains on the stack and do not cause more overhead than necessary.

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The documentation for this class was generated from the following file:

• libcaf_core/caf/callback.hpp