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.
An argument
placeholder, for use with boost::bind(), that corresponds to the iterator
argument of a handler for asynchronous functions such as boost::asio::async_connect.
unspecified iterator;
Header: boost/asio/placeholders.hpp
Convenience header: boost/asio.hpp