实例属性
ascii
asciiValue
此字符的 ASCII 编码值(如果它是 ASCII 字符)。
声明
var asciiValue: UInt8? { get }
详述
let chars: [Character] = ["a", " ", "™"]
for ch in chars {
print(ch, "-->", ch.asciiValue)
}
// Prints:
// a --> Optional(97)
// --> Optional(32)
// ™ --> nil
具有值 “\r\n” (CR-LF) 的字符被规范化为 “\n” (LF) 并且具有等于 10 的 asciiValue
属性。
let cr = "\r" as Character
// cr.asciiValue == 13
let lf = "\n" as Character
// lf.asciiValue == 10
let crlf = "\r\n" as Character
// crlf.asciiValue == 10
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:本文由纯净天空筛选整理自apple.com大神的英文原创作品 Character asciiValue。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。