std::return_temporary_buffer
From cppreference.com
| Defined in header <memory>
|
||
| template< class T > void return_temporary_buffer( T* p ); |
(deprecated in C++17) (removed in C++20) |
|
Deallocates storage previously allocated with std::get_temporary_buffer.
Parameters
| p | - | the pointer previously returned by std::get_temporary_buffer and not invalidated by an earlier call to return_temporary_buffer
|
Return value
(none)
Exceptions(none) |
(since C++17) |
Example
Run this code
#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); }
Output:
string 1 test ...
See also
| (deprecated in C++17)(removed in C++20) |
obtains uninitialized storage (function template) |