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 version of Boost is under active development. You are currently in the master branch. The current version is 1.91.0.

buffer_params::initial_read_size

Gets the initial size of the read buffer.

constexpr std::size_t
initial_read_size() const noexcept;