// Iterate over a set of ints and compute the sum of its elements.
func Example() {
s := set.EmptySet()
for i := 1; i < 6; i++ {
s.Add(i)
}
sum := 0
for v := range s.Iter() {
val := v.(int)
sum += val
}
fmt.Println(sum)
// Output: 15
}
// Iterate over a set using the Apply function, checks if there is an element
// that is even.
func ExampleApply() {
s := set.EmptySet()
for i := 1; i < 20; i += 2 {
s.Add(i)
}
s.Add(2)
even := false
f := func(v set.SetValue) bool {
val := v.(int)
if val%2 == 0 {
even = true
return false
}
return true
}
s.Apply(f)
fmt.Println(even)
// Output: true
}