How do I create a base URL using the NSURL class?

Question

I've tried this challenge for like 30 minutes :0 I hope its not an embarrassing mistake.

urls.swift

import Foundation

let courseID = 25
let treehouseBaseURL = NSURL (String: "https://api.teamtreehouse.com/\(courseID)")

Answer 1 · 2015-01-11T13:04:13Z

January 11, 2015 1:04pm

Hi Amaru,

It looks like that you have typed string with capital s on the line you declare the treehouseBaseURL variable. It should be lowercase so try this:

let treehouseBaseURL = NSURL(string: "https://api.teamtreehouse.com/\(courseID)")

Hope this helps!

-Tuomo

Answer 2 · 2015-01-26T19:25:39Z

January 26, 2015 7:25pm

I'm Having the same problem.... Any idea where I'm going wrong, code is identical o answer above: 'import Foundation

let courseID = 25 let treehouseBaseURL = NSURL(string: "https://api.teamtreehouse.com/\(courseID)")

Error is: Bummer! The URL string assigned to the NSURL isn't correct - please double-check it!

Answer 3 · 2015-03-15T13:07:13Z

March 15, 2015 1:07pm

Try this

import Foundation

let courseID = 25

let treehouseBaseURL = NSURL (string: "https://api.teamtreehouse.com/")

Answer 4 · 2016-05-25T05:24:54Z

May 25, 2016 5:24am

The problem is your courseID is an Int must use the String(treehouseCourseID) to type cast. Also the entire url should read.

Don't forget to add the "/course" before the course_id.

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