How to idiomatically increment a value in a map?

Question

go

package main
//Создаем структуру
type Item struct {
  Data  string
  Count int
}

func main() {
  //сделали мапу
  c := make(map[int]Item)
  //заполнили мапу двумя значениями
  c[10] = Item{"asdf", 1}
  c[20] = Item{"fghj", 1}
}

How to CORRECTLY and beautifully increase Count by 1?

Answer 1

Use pointers to structures.
c[10].Count++ will work in this case