Replace \r\n with \n

Question

This does not work:

scala> """one\r\ntwo\r\nthree\r\nfour""".replace("\r\n", "\n")
res1: String = one\r\ntwo\r\nthree\r\nfour

How to do that in Scala?

Is there a more idiomatic way of doing that, instead of using replace?

Answer 1

The problem is that """ quotes does not expand escape sequences. Three different approaches:

1. Use single " quotes in order to treat escape sequences correctly: "one\r\ntwo";
2. Use the s string interpolator, be careful following this approach cause this could lead to unexpected replacements: s"""one\r\ntwo""";
3. Call treatEscapes directly to expands escape sequences in your string: StringContext.treatEscapes("""one\r\ntwo""").

Refer also to this earlier question.

Answer 2

try this

"""one\r\ntwo\r\nthree\r\nfour""".replace("\\r\\n", "\n")

\ is treated as escape charater within string, so you need to tell the compiler that its not a escape character but a string.