Am i missing something, or '\s' is not valid "single-space" in kotlin?

# getting-started

[mrtreinis]

Am i missing something, or '\s' is not valid "single-space" in kotlin?

[gjesse]

mrtreinis: similar to java, you have to escape the \ with another \, or else use triple quotes. Either of these work:

println("a or b".replace("\\s".toRegex(), "_"))
    println("a or b".replace("""\s""".toRegex(), "_"))

[mrtreinis]

Notice the single quotes in my example. \n,\t etc seems to work just fine, \s does not

[gjesse]

oh, ok.. i misunderstood i guess - no you can't do that. not sure why you'd want to when you can just print(' ')

[gjesse]

it's also illegal escape in java

[mrtreinis]

Yeah, I was hoping. For me ' ' is less readable than '\s'. For example xxx.trim(' ', '/', '\t', '\n', '\r')

[gjesse]

i see... you could still use a regex instead, eg

str.replace("[\\t/\\n\\r\\s]".toRegex(), "")

better yet, wrap it up in an extension function:

fun String.myTrim() = this.replace("[\\t/\\n\\r\\s]".toRegex(), "")

then call it xxx.myTrim()