string-view

问题 string_view was a proposed feature within the C++ Library Fundamentals TS(N3921) added to C++17 As far as i understand it is a type that represent some kind of string \"concept\" that is a view of any type of container that could store something viewable as a string. Is this right ? Should the canonical const std::string& parameter type become string_view ? Is there another important point about string_view to take into consideration ? 回答1: The purpose of any and all kinds of "string