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std::unique_ptr::release(3) C++ Standard Libary std::unique_ptr::release(3) NAME std::unique_ptr::release - std::unique_ptr::release Synopsis pointer release() noexcept; (since C++11) (constexpr since C++23) Releases the ownership of the managed object, if any. get() returns nullptr after the call. The caller is responsible for deleting the object. Parameters (none) Return value Pointer to the managed object or nullptr if there was no managed ob- ject, i.e. the value which would be returned by get() before the call. Example // Run this code #include <memory> #include <iostream> #include <cassert> struct Foo { Foo() { std::cout << "Foo\n"; } ~Foo() { std::cout << "~Foo\n"; } }; int main() { std::cout << "Creating new Foo...\n"; std::unique_ptr<Foo> up(new Foo()); std::cout << "About to release Foo...\n"; Foo* fp = up.release(); assert (up.get() == nullptr); assert (up == nullptr); std::cout << "Foo is no longer owned by unique_ptr...\n"; delete fp; } Output: Creating new Foo... Foo About to release Foo... Foo is no longer owned by unique_ptr... ~Foo See also get returns a pointer to the managed object (public member function) reset replaces the managed object (public member function) http://cppreference.com 2022.07.31 std::unique_ptr::release(3)
NAME | Synopsis | Parameters | Return value | Example | Output: | See also
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