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

This is an older version of Boost and was released in 2018. The current version is 1.91.0.

handler_ptr::handler

Return a reference to the handler.

handler_type const&
handler() const;
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handler_type&
handler();
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