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 1.89.0.
The library is fully thread safe and re-entrant for all functions regards of the data type they are instantiated on. Thread safety limitations relating to user defined types present in previous releases (prior to 1.50.0) have been removed.