Determine if an execution_context contains a specified service type.

template<
    typename Service>
friend bool has_service(
    execution_context & e);

This function is used to determine whether the execution_context contains a service object corresponding to the given service type.

Parameters

Return Value

A boolean indicating whether the execution_context contains the service.

Requirements

Header: asio/execution_context.hpp

Convenience header: asio/execution.hpp