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 the documentation for a snapshot of the master branch, built from commit 064f557086.

Return a view to part of the string.

constexpr core::string_view
substr(
    size_type pos = 0,
    size_type n = core::string_view::npos) const;

See core::string_view::substr