__cpp_lib_constexpr_memory202202L(C++23)constexprstd::unique_ptr Nested types TypeDefinition pointerstd::remove_reference<Deleter>::type::pointerif that type exists, otherwiseT*. Must satisfyNullablePointer ele
cppreference.com 创建账户 页面 讨论 变换 查看 编辑 历史 std::unique_ptr<T,Deleter>::releaseC++ 内存管理库 std::unique_ptr pointer release() noexcept; (C++11 起) (constexpr since C++23) 若存在,则释放被管理对象的所有权。 调用后 get() 返回nullptr。 调用方负责清理该对象(例如使用 get...
Example Run this code #include <iomanip>#include <iostream>#include <memory>#include <string>#include <utility>classRes{std::strings;public:Res(std::stringarg):s{std::move(arg)}{std::cout<<"Res::Res("<<std::quoted(s)<<");\n";}~Res(){std::cout<<"Res::~Res();\n";}private...
#include <iostream>#include <memory>structFoo{Foo(int_val):val(_val){std::cout<<"Foo...\n";}~Foo(){std::cout<<"~Foo...\n";}intval;};intmain(){std::unique_ptr<Foo>up1(new Foo(1));std::unique_ptr<Foo>up2(new Foo(2));up1.swap(up2);std::cout<<"up1->val:"<<up1...
例子(改自cppreference.com) #include<iostream>#include<memory>structFoo{Foo() {std::cout<<"Foo\n"; } ~Foo() {std::cout<<"~Foo\n"; } };intmain(){std::unique_ptr<Foo> p1; {std::cout<<"Creating new Foo...\n";std::unique_ptr<Foo>p2(new Foo);// p1 = p2; // Error !
[]std::unique_ptr::operatorsstd::unique_ptr::releasestd::unique_ptr::resetstd::unique_ptr::swapstd::unique_ptr::unique_ptrstd::unique_ptr::~unique_ptrstd::unreachablestd::unwrap_ref_decaystd::unwrap_referencestd::uses_allocatorstd::uses_allocator<std::function>std::uses_allocator<std::...
引用 cppreference（std::unique_ptr - cppreference.com） 上的话：std::unique_ptr may be ...
例子(改自 cppreference.com) #include <iostream> #include <memory> struct Foo { Foo() { std::cout << "Foo\n"; } ~Foo() { std::cout << "~Foo\n"; } }; int main() { std::unique_ptr<Foo> p1; { std::cout << "Creating new Foo...\n"; ...
应该不太正确。。cppreference是这么描述的：std::shared_ptrmay be used with anincomplete typeT. ...
See https://en.cppreference.com/w/cpp/memory/unique_ptr/operator* The Auto_ptr3 class in lesson https://www.learncpp.com/cpp-tutorial/move-constructors-and-move-assignment/ has an overloaded operator-> that returns a pointer. 0 Reply Phargelm Reply to Alex August 20, 2024 12:49 pm...