How to use deleteCharactersInRange?

nsrange, string, swift

Solution

The method you're citing belongs to NSMutableString. But since you're using Swift and haven't explicitly created one, you get a Swift `String`.

If you want to operate on Swift `String`, you need to use `str.removeRange` and the rather awkward to use `Range`:

var str = "Hello, playground"
str.removeRange(Range<String.Index>(start: str.startIndex, end:advance(str.startIndex, 7)))
// "playground"

Problem

I want do call the method "deleteCharactersInRange" but it doesn't work. This is an excerpt from Apples Documentation: Swift func deleteCharactersInRange(_ aRange: NSRange) ``` var day = "" let stringRange:NSRange = NSMakeRange(0, 4) day = day.deleteCharacterInRange(stringRange) // I've also tried this, because in the Documentation // I can't see wether the method is void or returns a String day.deleteCharacterInRange(stringRange) ``` I get this error message: 'String' does not have a member named 'deleteCharactersInRange'

Original source