std::basic_stringstream<CharT,Traits,Allocator>::view
来自cppreference.com
< cpp | io | basic stringstream
std::basic_string_view<CharT, Traits> view()constnoexcept; | (C++20 起) | |
获得底层字符串对象上的 std::basic_string_view。等价于 return rdbuf()->view();。
目录 |
[编辑]参数
(无)
[编辑]返回值
底层字符串对象上的 std::basic_string_view。
[编辑]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
[编辑]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) |