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iOS Build a Weather App with Swift (Retired) Pulling Data From the Web Fetching JSON Data

Challange Error

I checked below codes couple times, everything seems ok but the compiler gives an error. I don't understand where I make the mistake

import Foundation let treehouseBaseURL = NSURL(string: "https://api.teamtreehouse.com/") let courseURL = NSURL(string: "/course/(courseID)", relativeToURL: treehouseBaseURL)

let courseData = NSData.dataWithContentsOfURL(courseURL, options: nil, error: nil)

students_code.swift
import Foundation
let treehouseBaseURL = NSURL(string: "https://api.teamtreehouse.com/")
let courseURL = NSURL(string: "/course/\(courseID)", relativeToURL: treehouseBaseURL)

let courseData = NSData.dataWithContentsOfURL(courseURL, options: nil, error: nil)

1 Answer

Erman, you are very close to completing this code challenge! After completing the code challenge, I was surprised that you did not need the options and error assignments in the method parameters. You also can use the NSData.contantsOfURL() method.

Here is the correct challenge code with revisions above,

let treehouseBaseURL = NSURL(string: "https://api.teamtreehouse.com/")
let courseURL = NSURL(string: "/course/\(courseID)", relativeToURL:      treehouseBaseURL)
let courseData = NSData(contentsOfURL: courseURL)

If you have any more questions, feel free to ask!