在线文档教程
C++
应用 | Utilities

std::return_temporary_buffer

STD::返回[医]暂时性[医]缓冲器

Defined in header
template< class T > void return_temporary_buffer( T* p (deprecated in C++17)

分配以前分配给std::get_temporary_buffer...

参数

p-the pointer previously returned by std::get_temporary_buffer and not invalidated by an earlier call to return_temporary_buffer

返回值

%280%29

Exceptions (none).(since C++17)

二次

#include <algorithm> #include <iostream> #include <memory> #include <string> #include <iterator> int main() { const std::string s[] = {"string", "1", "test", "..."}; const auto p = std::get_temporary_buffer<std::string>(4 // requires that p.first is passed to return_temporary_buffer // (beware of early exit points and exceptions) std::copy(s, s + p.second, std::raw_storage_iterator<std::string*, std::string>(p.first) // requires that each string in p is individually destroyed // (beware of early exit points and exceptions) std::copy(p.first, p.first + p.second, std::ostream_iterator<std::string>{std::cout, "\n"} std::for_each(p.first, p.first + p.second, [](std::string& e) { e.~basic_string<char>( } std::return_temporary_buffer(p.first }

二次

产出:

二次

string 1 test ...

二次

另见

get_temporary_buffer (deprecated in C++17)obtains uninitialized storage (function template)

© cppreference.com

在CreativeCommonsAttribution下授权-ShareAlike未移植许可v3.0。

http://en.cppreference.com/w/cpp/Memory/Report[医]暂时性[医]缓冲器