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iOS Build a Weather App with Swift (Retired) Concurrency Working With JSON

Convert the JSON data to an NSDictionary and store it in a constant named userCourseDictionary

how do I convert the JSON data to an NSDictionary

json.swift
// We've already created a NSData object with some json encoded data for you
import Foundation

let jsonString : NSString = "{\"results\": \"success\"}"
let userCourseData : NSData = jsonString.dataUsingEncoding(NSUTF8StringEncoding)!

// Now you just need to decode it
let userCourseDictionary: NSDictionary = NSJSONSerialization(contentsOfURL: courseURL)