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 non-modifiable buffer that represents the given string.

const_buffers_1 buffer(
    const std::string & data,
    std::size_t max_size_in_bytes);

A const_buffers_1 value equivalent to:

const_buffers_1(
    data.data(),
    min(data.size(), max_size_in_bytes));

The buffer is invalidated by any non-const operation called on the given string object.