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

string::subview

Return a view.

string_view
subview(
    std::size_t pos,
    std::size_t count = npos) const;
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string_view
subview() const;
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