字符串插值，转义引号 [英] String interpolation, escaping quotation mark

问题描述

事实证明这有多困难，我有点困惑.我已经环顾过 stackoverflow，但似乎没有任何解决方案对我有用.

I'm somewhat baffled by how difficult this turns out to be. I've already looked around stackoverflow, but no solution seems to work fine for me.

我想做什么:

val file = checkcache(fileName)

file match
{
    case Some(_) => {println(s"File $file found!"); file.get}
    case None => createFile(fileName)
}

现在，对于一个名为blubb"的文件，该文件已经存在于它输出的缓存中，这非常有效

Now, this works perfectly fine, for a file named "blubb" that already resides in the cache it outprints

找到文件 blubb

并返回文件.

现在我想要这个

找到文件blubb"

所以我尝试这样做:

case Some(_) => { println(s"File \" $file \" found!"); file.get}

编译器抛出

')' 预期但找到字符串文字.

')' expected but string literal found.

为什么会这样，我如何正确转义双引号，最好在 $file 变量之后或之前没有空格?

Why is that and how do I escape a double quotation mark correctly and preferably without an empty space after or before the $file-variable?

推荐答案

使用三引号:

scala> s"""File "$file" found!"""
res0: String = File "blubb" found!

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