Return Value 戻り値
A new set with the unique elements of this set and other.
この集合とotherとの特有な要素を持つ新しい集合。
Instance Method
インスタンスメソッド
union(_:)
Returns a new set with the elements of both this and the given set.
Availability 有効性
- iOS 13.0+
- iPadOS 13.0+
- macOS 10.15+
- Mac Catalyst 13.0+
- tvOS 13.0+
- watchOS 6.0+
Technology
- Swift
UI
Declaration 宣言
func union(_ other: AccessibilityTraits ) -> AccessibilityTraits Parameters パラメータ
otherA set of the same type as the current set. 現在の集合と同じ型の集合。
Discussion 議論
In the following example, the attendees set is made up of the elements of the attendees and visitors sets:
let attendees: Set = ["Alicia", "Bethany", "Diana"]
let visitors = ["Marcia", "Nathaniel"]
let attendeesAndVisitors = attendees.union(visitors)
print(attendeesAndVisitors)
// Prints "["Diana", "Nathaniel", "Bethany", "Alicia", "Marcia"]"If the set already contains one or more elements that are also in other, the existing members are kept.
let initialIndices = Set(0..<5)
let expandedIndices = initialIndices.union([2, 3, 6, 7])
print(expandedIndices)
// Prints "[2, 4, 6, 7, 0, 1, 3]"