Person();voidSet_Name(stringname) {this->mName =name; }voidInfo() { std::cout<<"name:"<<this->mName <<endl; }public:stringmName;intmAge; };intmain() { Person* p1 =newPerson(); unique_ptr<Person>uc1{ p1 }; p1->Set_Name("哈哈"); uc1->Info();//这种方式需要再删除裸指...
classChild;classParent;classParent{private:std::shared_ptr<Child>ChildPtr;public:voidsetChild(std::shared_ptr<Child>child){this->ChildPtr=child;}voiddoSomething(){if(this->ChildPtr.use_count()){}}~Parent(){}};classChild{private:std::shared_ptr<Parent>ParentPtr;public:voidse...
p1->print(); p1->set("ceshi2"); p1->print();//p1.release();p1.reset(); p1=std::move(p2);if(p2 ==nullptr) { std::cout<<"p2 is nullptr"<<endl; } p1->print(); PTest*p =p1.release(); p->print(); p2.reset(p); p2->print(); p1=function(); p1->print(); 注...
我在std::unique_ptr向量中有很多它的实例。现在,我想从上面的向量创建一个具有相同智能指针的std::set,最好是在它的构造过程中。显而易见的设计如下: #include <memory> #include <set> #include <vector> class A { public: /// type of itself typedef A self; A() = default; A(const self& ano...
()<<endl;//unique_ptr resetautou3{make_unique<Sample>()};u3->setName("u3");#if 0u2.reset();//主动调用reset后, u2指向的指针内存释放u2.reset( new Sample{} );//主动调用reset后, u2指向的指针内存释放, 重新指向分配的内存#endif//unique_ptr releaseautop_u3{u3.get()};u3.release();/...
如果我这样做了 int main() std::unordered_set<std::unique_ptr<int>> set;} 一切正常,insert调用move构造函数(我想)。& obj) {set.insert(obj);} { 浏览55提问于2021-04-23得票数 3 回答已采纳 1回答 我不能在unique_ptrs中使用'fill‘std::向量构造函数 、、 我正在尝试使用std::vector构造...
voiddo_with_cat_pass_ref(unique_ptr<Cat>&c){c->set_name("hhhhhhh");c->cat_info();c.reset();}unique_ptr<Cat>uc_p2=make_unique<Cat>("hello..");do_with_cat_pass_ref(uc_p2);cout<<"uc_p2 address is :"<<uc_p2.get()<<endl; ...
在英语口语交流中,我们可能会这样描述这个过程: “First, we allocate memory dynamically using thenewkeyword. After we finish using the pointer, we have to deallocate the memory using thedeletekeyword. Finally, to prevent dangling pointers, we set the pointer tonullptr.” (首先,我们使用new关键字动态...
//C++头文件 #include<iostream> #include<iomanip> #include<fstream> #include<string> #include<vector> #include<algorithm> #include<set> #include<array> #include<memory> #include<functional> using namespace std; //一些Windows头文件 #include<windows.h> #include<sddl.h> #include<Lm.h> #pragma...
message(STATUS "This is linux, set CMAKE_PREFIX_PATH.") set(CMAKE_PREFIX_PATH /vcpkg/ports/cppwork/vcpkg_installed/x64-linux/share) endif(APPLE) project(holder) add_definitions(-std=c++17) add_definitions(-g) find_package(ZLIB)