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iOS Build a Weather App with Swift Interacting with Data From the Web Constructing a URL

Posted by Charlie Maréchal
Charlie Maréchal
7,001 Points

Hello ! I'm pretty stuck here, can't seem to create an absolute URL....

Why, when I try to create a new constant, does it make the first step no longer passing ?

urls.swift 
import Foundation

let treehouseCourseID = 25

// Add your code below

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