C++匿名函数怎么使用

?C++?,????lambda???????????lambda?????????????????,?????????????????????

lambda??????????:

???? -> ???? { ??? }

??,????????????,????????????,???????????????,????????????

???????lambda??????:

#include 
#include 
#include 

int main() {
   std::vector numbers = {1, 2, 3, 4, 5};

   // ????????sort???????
   std::sort(numbers.begin(), numbers.end(), [](int a, int b) {
      return a > b;
   });

   // ??????????????
   std::for_each(numbers.begin(), numbers.end(), [](int num) {
      std::cout << num << " ";
   });

   return 0;
}

??????,????lambda?????std::sort()???????,????numbers?????????lambda?????std::for_each()???????,?????????