退格键 (\b) 等同于 swift 语言
Backspace (\b) Equivalent in swift language
swift 中的 \b 是什么？我必须用 \b 拆分从服务器接收到的字符串？
来自 "Strings and Characters" 在 Swift
参考：
Special Characters in String Literals
String literals can include the following special characters:
- The escaped special characters
[=12=] (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"
或从 Unicode 值创建一个字符串：
let bs = String(UnicodeScalar(8))
let string = "THIS\(bs)IS\(bs)A\(bs)TEST"
swift 中的 \b 是什么？我必须用 \b 拆分从服务器接收到的字符串？
来自 "Strings and Characters" 在 Swift 参考：
Special Characters in String Literals
String literals can include the following special characters:
- The escaped special characters
[=12=](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"
或从 Unicode 值创建一个字符串：
let bs = String(UnicodeScalar(8))
let string = "THIS\(bs)IS\(bs)A\(bs)TEST"