A Swift 3 extension for pretty-printing JSON (in swift: [String: Any])

Dictionary+Extension.swift

//  Dictionary/JSON Extension
//  Pretty Print Json Objects
//
//  Created by Domene on 10/02/17.
//

import Foundation

extension Dictionary where Key == String, Value == AnyObject {
    func prettyPrint() -> String{
        var string: String = ""
        if let data = try? JSONSerialization.data(withJSONObject: self, options: .prettyPrinted){
            if let nstr = NSString(data: data, encoding: String.Encoding.utf8.rawValue){
                string = nstr as String
            }
        }
        return string
    }
}

//Usage: print(json.prettyPrint())