vicc

extension String {
    /**
     Truncates the string to the specified length number of characters and appends an optional trailing string if longer.
     
     - Parameter length: A `String`.
     - Parameter trailing: A `String` that will be appended after the truncation.
    
     - Returns: A `String` object. 
     */
    func truncate(length: Int, trailing: String = "…") -> String {