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 1.90.0.
stream& operator=( stream&&);
If NextLayer is move assignable,
this function will move-assign a new stream from the existing stream.
The behavior of move assignment on or from streams with active or pending operations is undefined.