C++超详细梳理lambda和function的使用方法

 // 1  匿名调用
    [](string name)
    {
        cout <<"this is anonymous" <

 // 2 通过auto赋值
    auto fname = [](string name)
    {
        cout <<"this is auto  " <

    typedef void (*P_NameFunc)(string name);
    // 3 函数指针
    P_NameFunc fname2 = [](string name)
    {
        cout <<"this is P_NameFunc " <

// 4 function
    function funcName;
    funcName = [](string name)
    {
        cout <<"this is function " <

    int age = 33;
    string name = "zack";
    int score = 100;
    string job = "softengineer";
    //值捕获
    [age, name](string name_)
    {
        cout <<"age is " <

    int age = 33;
    string name = "zack";
    int score = 100;
    string job = "softengineer";
    [&age, &name](string name_)
    {
        cout <<"age is " <

vector> vec_Funcs;
void use_lambda2()
{
    int age = 33;
    string name = "zack";
    int score = 100;
    string job = "softengineer";
    vec_Funcs.push_back([age, name](string name_)
                        {   cout <<"this is value catch " <

    int age = 33;
    string name = "zack";
    int score = 100;
    string job = "softengineer";
    [=, &name]()
    {
        cout <<"age is " <

   int age = 33;
   string name = "zack";
   int score = 100;
   string job = "softengineer";
   [&, name]()
   {
        cout <<"age is " <

void use_function()
{
    list> list_Funcs;
    //存储函数对象
    list_Funcs.push_back(FuncObj());
    //存储lambda表达式
    list_Funcs.push_back([](string str)
                         { cout <<"this is lambda call " <

    //绑定全局函数
    auto newfun1 = bind(globalFun2, placeholders::_1, placeholders::_2, 98, "worker");
    //相当于调用globalFun2("Lily",22, 98,"worker");
    newfun1("Lily", 22);
    //多传参数没有用，相当于调用globalFun2("Lucy",28, 98,"worker");
    newfun1("Lucy", 28, 100, "doctor");
    auto newfun2 = bind(globalFun2, "zack", placeholders::_1, 100, placeholders::_2);
    //相当于调用globalFun2("zack",33,100,"engineer");
    newfun2(33, "engineer");
    auto newfun3 = bind(globalFun2, "zack", placeholders::_2, 100, placeholders::_1);
    newfun3("coder", 33);

class BindTestClass
{
public:
    BindTestClass(int num_, string name_) : num(num_), name(name_) {}
    static void StaticFun(const string &str, int age);
    void MemberFun(const string &job, int score);
public:
    int num;
    string name;
};

void BindTestClass::StaticFun(const string &str, int age)
{
    cout <<"this is static function" <

    //绑定类的静态成员函数,加不加&都可以
    // auto staticbind = bind(BindTestClass::StaticFun, placeholders::_1, 33);
    auto staticbind = bind(&BindTestClass::StaticFun, placeholders::_1, 33);
    staticbind("zack");

    BindTestClass bindTestClass(33, "zack");
    // 绑定类的成员函数,一定要传递对象给bind的第二个参数，可以是类对象，也可以是类对象的指针
    // 如果要修改类成员，必须传递类对象的指针
    auto memberbind = bind(BindTestClass::MemberFun, &bindTestClass, placeholders::_1, placeholders::_2);
    memberbind("coder", 100);
    auto memberbind2 = bind(BindTestClass::MemberFun, placeholders::_3, placeholders::_1, placeholders::_2);
    memberbind2("coder", 100, &bindTestClass);
    //绑定类成员时，对象必须取地址
    auto numbind = bind(&BindTestClass::num, placeholders::_1);
    std::cout <

    // function接受bind返回的函数
    function funcbind = bind(globalFun2, "zack", placeholders::_1, 100, placeholders::_2);
    funcbind(33, "engineer");
    // function接受bind 成员函数
    function funcbind2 = bind(BindTestClass::MemberFun, &bindTestClass, placeholders::_1, placeholders::_2);
    funcbind2("docker", 100);
    function funcbind3 = bind(BindTestClass::MemberFun, placeholders::_3, placeholders::_1, placeholders::_2);
    funcbind3("driver", 100, &bindTestClass);
    // function 直接接受成员函数,function的模板列表里第一个参数是类对象引用
    function functomem = BindTestClass::MemberFun;
    functomem(bindTestClass, "functomem", 88);
    // function 绑定类的静态成员函数
    function funbindstatic = bind(&BindTestClass::StaticFun, placeholders::_1, 33);
    funbindstatic("Rolis");