std::map find_if condition style confusion

Question

I\'d like to use std::find_if to search for the first element in my map that has a certain value in a specific element of its value structure. I\'m a little confus

Answer 1

You can use a lambda function

int val = ...;
auto it = std::find_if(myMap.begin(), myMap.end(), 
   [val](const std::pair & t) -> bool { 
      return t.second.x == val;
   }
);

But as Kirill V. Lyadvinsky answer suggests the "first" element may not be what you expect.