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io_service::has_service

Determine if an io_service contains a specified service type.

template<
    typename Service>
friend bool has_service(
    io_service & ios);

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

Parameters

ios

The io_service object that owns the service.

Return Value

A boolean indicating whether the io_service contains the service.

Requirements

Header: boost/asio/io_service.hpp

Convenience header: boost/asio.hpp


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