rpp::constraint::observable_strategy Concept Reference

A concept that defines the requirements for an observable strategy. More...

#include <fwd.hpp>

Concept definition

template<typename S, typename T>
concept rpp::constraint::observable_strategy =  requires(const S& strategy, rpp::details::observers::fake_observer<T>&& observer) {
        {
            strategy.subscribe(std::move(observer))
        } -> std::same_as<void>;
 
        typename S::value_type;
        typename S::optimal_disposables_strategy;
        requires rpp::details::observables::constraint::disposables_strategy<typename S::optimal_disposables_strategy>;
    }

Detailed Description

A concept that defines the requirements for an observable strategy.

This concept ensures that a type S meets the following criteria:

• It has a subscribe method that accepts observer of type T and returns void.
• It defines a nested type value_type to represent the type of values emitted by the observable.
• It defines a nested type optimal_disposables_strategy to define the optimal disposables strategy observer could/should use to handle current observable properly.

Template Parameters

S	The type to be checked against the concept.
T	The type of the values emitted by the observable.