實例屬性
base
此實例包裝的值。
聲明
var base: Any { get }
詳述
可以使用類型轉換運算符之一(as?
、as!
或 as
)將 base
屬性轉換回其原始類型。
let anyMessage = AnyHashable("Hello world!")
if let unwrappedMessage = anyMessage.base as? String {
print(unwrappedMessage)
}
// Prints "Hello world!"
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 AnyHashable base。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。