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

Create a new modifiable buffer that represents the given memory range.

mutable_buffer buffer(
    void * data,
    std::size_t size_in_bytes);

mutable_buffer(data, size_in_bytes).