当尝试在字符串中包含 " 时，使用 \" 有效但 \ 也包含在内

Question

我正在尝试使用以下代码将字符串发送到 Http 请求

var outStr = "{product_code: \"660825\", quantity: \(qty)}"

因为我包含了 \ 字符，所以它编译正常，但是当我运行它时，outStr 的值是

{product_code: \"660825\", quantity: 2}

我做错了什么，我怎么会失去\？

Answer 1

如你所见in the documentation:

String literals can include the following special characters:

The escaped special characters [=14=] (null character), \ (backslash), \t (horizontal tab), \n (line feed), \r (carriage return), \" (double quote) and \' (single quote)

（剪断）

let wiseWords = "\"Imagination is more important than knowledge\" - Einstein"
// "Imagination is more important than knowledge" - Einstein

你做得对，我的猜测是你的服务器将 " 转义为 \"，这就是你看到 {product_code: \"660825\", quantity: 2}.

的原因

当尝试在字符串中包含 " 时，使用 \" 有效但 \ 也包含在内

When trying to include " in a String, using \" works but the \ is included too

string

xcode

string-formatting

swift