Replace substring of NSAttributedString with another NSAttributedString

Question

I want to replace a substring (e.g. @\"replace\") of an NSAttributedString with another NSAttributedString.

I am looking for a

Answer 1

I find that all of the other answers does not work. Here is how I replaced content of a NSAttributed string in a category extension:

func stringWithString(stringToReplace:String, replacedWithString newStringPart:String) -> NSMutableAttributedString
{
    let mutableAttributedString = mutableCopy() as! NSMutableAttributedString
    let mutableString = mutableAttributedString.mutableString

    while mutableString.containsString(stringToReplace) {
        let rangeOfStringToBeReplaced = mutableString.rangeOfString(stringToReplace)
        mutableAttributedString.replaceCharactersInRange(rangeOfStringToBeReplaced, withString: newStringPart)
    }
    return mutableAttributedString
}