I want do call the method "deleteCharactersInRange" but it doesn't work.
This is an expert from Apples Documentation
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
'String' does not have a member named 'deleteCharactersInRange'
The method you're citing belongs to NSMutableString. But since you're using Swift and haven't explicitly created one, you get a Swift
If you want to operate on Swift
String, you need to use
str.removeRange and the rather awkward to use
var str = "Hello, playground" str.removeRange(Range<String.Index>(start: str.startIndex, end:advance(str.startIndex, 7))) // "playground"