Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Mike Hansen
Python Web Development Techdegree Student 3,419 PointsUse of unresolved identifier 'GKRandomNumber'
Hi, i tried went over to this because there were some things in the just simple iPhone app with swift was outdated so i thought i would go over to swift 2.0
Now in the Rand function i am getting a really annoying error that keeps bugging me. I searched through Google after a solution but nothing that would solve my problem.
Is it because they swapped out the GKRandomNumber function or what?
If i wrote something wrong here's my code:
// // FactBook.swift // FunFacts // // Created by Mike Hansen on 03/05/2016. // Copyright © 2016 DelLong Company. All rights reserved. //
import Foundation
struct FactBook {
let factsArray = [
"Ostriches can run faster than horses.",
"Ants Stretch when they wake up in the morning.",
"Olympic gold medals are actually mostly made out of silver.",
"You are born with 300 bones; by the time you are an adult you will have 206.",
"It takes about 8 minutes for the light from the sun to reach earth.",
"Some bamboo plants can grow up to one meter in just one day!",
"Some penguins can leap 2-3 meters out of the water.",
"The state of Florida is bigger than england.",
"On average, it takes 66 days to form a habit.",
"Mammoths still walked earth when the great pyramid were being built."
]
func getRandomFact() -> String {
let randomNumber = GKRandomNumber.sharedRandom().nextIntWithUpperBound(10)
}
}
3 Answers
Gavin Maxwell
3,521 PointsI believe you want to import GameplayKit and then you can generate a random number like this:
let randomNumber = GKRandomSource.sharedRandom().nextIntWithUpperBound(10)
Gavin Maxwell
3,521 PointsWell it has to be declared somewhere, so you'd have to import "something". Games use lots of random numbers, so it kinda makes sense. Anyway, hopefully my original answer was helpful.
agreatdaytocode
24,757 PointsGavin your answer is correct. Mike, if you import GameKit the error should go away.
Mike Hansen
Python Web Development Techdegree Student 3,419 PointsIt did work i just didn't have time to give you best answer cause i'm in school but thank you! :)
Gavin Maxwell
3,521 PointsBecause that's where GKRandomSource is declared. Of course importing GameKit would work also, but that imports a whole bunch of additional stuff that you don't need just for a random number.
Mike Hansen
Python Web Development Techdegree Student 3,419 PointsOh i was just wondering why they didn't make the function a standalone instead of implementing a GameKit to my app i just thought it was weird
Mike Hansen
Python Web Development Techdegree Student 3,419 PointsOh i was just wondering why they didn't make the function a standalone instead of implementing a GameKit to my app i just thought it was weird
Mike Hansen
Python Web Development Techdegree Student 3,419 PointsMike Hansen
Python Web Development Techdegree Student 3,419 PointsWhy would i have to import GameplayKit ?