實例方法
subtract(_:)
從此集合中移除給定集合的元素。
聲明
mutating func subtract(_ other: Self)
參數
other
與當前集合類型相同的集合。
詳述
在以下示例中,同時也是 neighbors
集成員的 employees
集元素將被刪除。特別是,名稱 "Bethany"
和 "Eric"
已從 employees
中刪除。
var employees: Set = ["Alicia", "Bethany", "Chris", "Diana", "Eric"]
let neighbors: Set = ["Bethany", "Eric", "Forlani", "Greta"]
employees.subtract(neighbors)
print(employees)
// Prints "["Diana", "Chris", "Alicia"]"
可用版本
iOS 8.0+, iPadOS 8.0+, macOS 10.10+, Mac Catalyst 13.0+, tvOS 9.0+, watchOS 2.0+
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注:本文由純淨天空篩選整理自apple.com大神的英文原創作品 SetAlgebra subtract(_:)。非經特殊聲明,原始代碼版權歸原作者所有,本譯文未經允許或授權,請勿轉載或複製。