a := []int{1,2,3,4}
it := slices.All(a)
itRev := slices.Reverse(it)
itMap := slices.Map(it)
itFilter := slices.Filter(it, func(i int) bool { return i % 2 == 0 })
slices.ForEach(it, func(i int) { fmt.Println(i) })
There’s an asterisk here because you cherrypicked a function that is already widely known and understood. All we really need to understand that function is its name. If you chose complex niche business logic, or The Wave Function, it would have made for a more fair and instructive example.