The Std::bind and function of c++11

Source: Internet
Author: User

  • Basic Test Code
      1. #include<iostream>
      2. #include<functional>
      3. void func(void)
      4. {
      5. std::cout << __FUNCTION__ << std::endl;
      6. }
      7. void callback(std::function<int(int,char*)> fr)
      8. {
      9. fr(1,"gdg");
      10. }
      11. int strlength(int n,constchar* str)
      12. {
      13. return n + strlen(str);
      14. }
      15. void outPut(int x,int y)
      16. {
      17. std::cout << x <<" "<< y << std::endl;
      18. }
      19. int main()
      20. {
      21. //测试bind
      22. auto fr = std::bind(strlength, std::placeholders::_1, std::placeholders::_2);
      23. //function作为函数参数
      24. callback(fr);
      25. std::bind(strlength,1,"hhha")();
      26. STD : bind ( Strlength std :: placeholders : _1 "HHA" 45 //the first parameter is passed out from the outside, the second parameter is already set
      27. STD : bind ( Strlength 23 STD : placeholders : _1 "Lallaa" //bind in the order of the parameters of the function
      28. STD : bind ( Strlength std :: placeholders : _2 STD : placeholders : _1 "HHAFDSF" 25 //the first argument with the passed-in second parameter, the second argument with the first parameter passed in
      29. std::bind(strlength, std::placeholders::_1, std::placeholders::_3)(12,45,"fhsafdf");//对,第二个参数没用到
      30. }



From for notes (Wiz)



The Std::bind and function of c++11

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