Top Answers

1. <utility> not necessarily included when swap() is performed - How can this become a problem?
   5 votes
2. overload operator & to produce sum of int[][]
   3 votes
3. Why do I need the extra pair of curly braces when defining an array of pairs?
   3 votes
4. Does std::lock_guard release the mutex after constructed with std::adopt_lock option?
   2 votes
5. How to test if member is integral in concept?
   1 votes