do {
    let jsonData = try Data(contentsOfURL: URL(string: url)!)
    let json = try JSONSerialization.JSONObject(jsonData, options: [])

    if let json = jsonOptional as? [String: Any] {
        if let other = json["other"] as? [String: Any] {
            if let nicknames = other["nicknames"] as? [String] {
                if let handle = nicknames[0] as? String {
                    print("Some folks call me \(handle)")
                }
            }
        }
    }
}
catch {
    print("Dangit, what happened here? \(error.localizedDescription)")
}

do {
    let jsonData = try Data(contentsOfURL: URL(string: url)!)
    let parser = try JSONParser(data: jsonData)

    if let handle = try parser.getString("other.nicknames[0]") {
        print("Some folks call me \(handle)")
    }
}
catch {
    print("Dangit! Another error! \(error.localizedDescription)")
}

let parser = JSONParser(dictionary: existingDictionary)

if let handle = try parser.getString("other.nicknames[0]") {
    print("Some folks like to call me \(handle)")
}

if let name = try parser.getString("name") {
    print("My name is \(name)")
}

if let number = try parser.getInt("favorite_number") {
    print("\(number) is my favorite number!")
}

if let gpa = try parser.getDouble("gpa") {
    print("My stellar highschool gpa was \(gpa)")
}

if let city = parser.get("other.city") {
    // city will be type Any
}

if let favorites = parser.getArray("favorite_things") {
    // favorites => ["Github", 42, 98.6]
}

do {
    let badJsonData = try Data(contentsOfURL: URL(string: url)!)
    let parser = try JSONParser(data: badJsonData)
    // Everything was fine past this point! Rock on!!
}
catch {
    // Dangit! One more error... *sigh*
    print("Some error happened! Fix it! Here it is: \(error.localizedDescription)")
}