ios - Backspace (\b) 在swift语言中等价

Question

swift 中的 \b 是什么？我必须使用 \b 拆分从服务器接收到的字符串？

Answer 1

来自 "Strings and Characters"在 swift 引用:

Special Characters in String Literals

String literals can include the following special characters:

• The escaped special characters \0 (null character), \\ (backslash), \t (horizontal tab), \n (line feed), \r (carriage return), \" (double quote) and \' (single quote)
• An arbitrary Unicode scalar, written as \u{n}, where n is a 1–8 digit hexadecimal number with a value equal to a valid Unicode code point

所以Swift没有退格的特殊字符字符，如C语言中的\b。您可以使用 Unicode特殊字符 \u{n}:

let string = "THIS\u{8}IS\u{8}A\u{8}TEST"

或者从 Unicode 值创建一个字符串:

let bs = String(UnicodeScalar(8))
let string = "THIS\(bs)IS\(bs)A\(bs)TEST"