extension NSMutableAttributedString for to find the range of String

range.swift

extension NSMutableAttributedString {

    public func getRangeOfString(textToFind:String)->NSRange{
        let foundRange = self.mutableString.rangeOfString(textToFind)
        
        return foundRange
    }
}

//example of use 
let attributedString = NSMutableAttributedString(string:"Love GitHub")
let foundRange = attributedString.getRangeOfString("love")
 if foundRange.location != NSNotFound {
    //add attribute
      //  attributedString.addAttributes(myAttribute,foundRange)
  }