std::basic_string_view::back
constexpr const_reference back() const; | | (since C++17) |
|---|
返回对视图中最后一个字符的引用。如果empty() == true...
参数
%280%29
返回值
引用最后一个字符，相当于operator[](size() - 1)...
复杂性
常量。
另见
front | accesses the first character (public member function) |
|---|---|
empty | checks whether the view is empty (public member function) |
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