How to replace multiple characters in kotlin string?
Like java replaceAll() function.
str.replaceAll("[$,.]", "") //java code
I know this answer so close but want to change more than one character at the same time
[$,.] is regex, which is the expected input for Java’s
replaceAll() method. Kotlin, however, has a class called
string.replace() is overloaded to take either a String or a Regex argument.
So you have to call
.toRegex() explicitly, otherwise it thinks you want to replace the String literal
[$,.]. It’s also worth mentioning that
$ in Kotlin is used with String templates, meaning in regular strings you have to escape it using a backslash. Kotlin supports raw Strings (marked by three
" instead of one) which don’t need to have these escaped, meaning you can do this:
str = str.replace("""[$,.]""".toRegex(), "")
In general, you need a Regex object. Aside using
toRegex() (which may or may not be syntactical sugar), you can also create a Regex object by using the constructor for the class:
str = str.replace(Regex("""[$,.]"""), "")
Both these signal that your string is regex, and makes sure the right
replace() is used.