Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Compare property values for inequality.

constexpr bool operator!=(
    const outstanding_work_t & a,
    const outstanding_work_t & b);

Header: boost/asio/execution/outstanding_work.hpp

Convenience header: boost/asio/execution.hpp