C++

std::bind
说明: https://blog.csdn.net/tennysonsky/article/details/77447804
如果bind是非static的，std::bind(&MyClass::member, this, ......)

std::function
使用方法参考https://blog.csdn.net/wangshubo1989/article/details/49134235

std::ref 和 std::cref
bind()是一个函数模板，它的原理是根据已有的模板，生成一个函数，但是由于bind()不知道生成的函数执行的时候，传递进来的参数是否还有效。所以它选择参数值传递而不是引用传递。如果想引用传递，std::ref和std::cref就派上用场了
参考 https://blog.csdn.net/lmb1612977696/article/details/81543802

std::move
std::move(t) 用来表明对象t 是可以moved from的,它允许高效的从t资源转换到lvalue上.

void TestSTLObject()
{
  std::string str = "Hello";
  std::vector<std::string> v;

  // uses the push_back(const T&) overload, which means
  // we'll incur the cost of copying str
  v.push_back(str);
  std::cout << "After copy, str is \"" << str << "\"\n";

  // uses the rvalue reference push_back(T&&) overload,
  // which means no strings will be copied; instead, the contents
  // of str will be moved into the vector.  This is less
  // expensive, but also means str might now be empty.
  v.push_back(std::move(str));
  std::cout << "After move, str is \"" << str << "\"\n";

  std::cout << "The contents of the vector are \"" << v[0]
                                       << "\", \"" << v[1] << "\"\n";
}

//执行结果：
After copy, str is "Hello"
After move, str is ""
The contents of the vector are "Hello", "Hello