std::basic_string_view::size
constexpr size_type size() const; | | (since C++17) |
|---|---|---|
constexpr size_type length() const; | | (since C++17) |
返回CharT视图中的元素,即std::distance(begin(), end())...
参数
%280%29
返回值
的数目CharT视图中的元素。
例外
noexcept规格:
noexcept
复杂性
常量。
另见
empty | checks whether the view is empty (public member function) |
|---|---|
max_size | returns the maximum number of characters (public member function) |
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