std::basic_ostringstream<CharT,Traits,Allocator>::view
来自cppreference.com
< cpp | io | basic ostringstream
std::basic_string_view<CharT, Traits> view() const noexcept; |
(C++20 起) | |
获得底层字符串对象上的 std::basic_string_view。等价于 return rdbuf()->view();。
参数
(无)
返回值
底层字符串对象上的 std::basic_string_view。
示例
运行此代码
#include <iostream> #include <sstream> int main() { // 输入/输出流 std::stringstream buf1; buf1 << 69; int n = 0; buf1 >> n; std::cout << "1) buf1 = [" << buf1.view() << "], n = " << n << '\n'; // 追加模式的输出流 std::ostringstream buf2("test", std::ios_base::ate); buf2 << '1'; std::cout << "2) buf2 = [" << buf2.view() << "]\n"; // 输入流 std::istringstream inbuf("-42"); inbuf >> n; std::cout << "3) inbuf = [" << inbuf.view() << "], n = " << n << '\n'; }
输出:
1) buf1 = [69], n = 69 2) buf2 = [test1] 3) inbuf = [-42], n = -42
参阅
(C++20) |
获得底层字符序列上的视图 ( std::basic_stringbuf<CharT,Traits,Allocator> 的公开成员函数) |