...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
(Inherited from grammar::string_view_base
)
Return a view to part of the string.
constexpr string_view substr( size_type pos = 0, size_type n = string_view::npos) const;
See string_view::substr