Sure, but intersections are straightforward to write with Go maps: for key, _ := range first { if _, found2 := second[key]; found2 { if _, foun

Sure, but intersections are straightforward to write with Go maps: for key, _ := range first { if _, found2 := second[key]; found2 { if _, found3 := third[key]; found3 { // This is the intersection of 3 sets } } }