func formIntersection (with: CharacterSet)
Modifies the receiver so it contains only characters that exist in both the receiver and another set.
レシーバを修正します、それでそれはレシーバおよび別の集合の両方の中に存在する文字だけを含みます。
Availability 有効性
Technology
func formUnion(with otherSet: CharacterSet
)
func formIntersection (with: CharacterSet)