4 func fn(m map[int]int) {
6 if _, ok := m[0]; !ok {
13 if v, ok := m[0]; ok && v > 0 {
19 if _, ok := m[key]; ok {
22 if _, ok := m[key]; ok {
25 println("not deleted")
29 if _, ok = m[key]; ok {
36 delete := func(a, b interface{}) {}
37 if _, ok := m[0]; ok {