Treehouse | Community | What is an Optional?

🤑 Join the Treehouse affiliate program and earn 25% commission!

Join our Live Career-Building Workshop: Launch Your Tech-Adjacent Career! ⭐ Register here!

🌟 Dreaming of a bright future? 🎓 Ask about the Treehouse Scholarship program! 🚀

Curious which AI tools Treehouse developers love? ⚙️ Check them out!

🫡 Treehouse for Military offers discounts to Veterans, service members and their families!

Newest
- Newest
- Active
- Unanswered
- Featured
All Topics

Zachary Goforth
748 Points
What is the expected after 'if' condition?

Posted July 10, 2015 11:11pm by Zachary Goforth

Zachary Goforth
748 Points
1 Answer
Kyle DuFrene
4,217 Points
Swift Functions and Optionals Challenge 2 of 2

Posted July 10, 2015 3:18am by Kyle DuFrene

Kyle DuFrene
4,217 Points
2 Answers
Zachary Goforth
748 Points
How do I modify the 'search' function to return an optional instead of just a String in Challenge Task 1?

Posted July 10, 2015 2:24am by Zachary Goforth

Zachary Goforth
748 Points
1 Answer
Javier Mateo
2,624 Points
search function challenge task

Posted July 5, 2015 2:19pm by Javier Mateo

Javier Mateo
2,624 Points
1 Answer
Lacey Brutschy
3,899 Points
I cannot get this Swift Operator's quiz...

Posted June 25, 2015 3:45am by Lacey Brutschy

Lacey Brutschy
3,899 Points
2 Answers
Nikhil Pandey
1,418 Points
Problem with example code on Optionals in Xcode 6.3 and Xcode 7 beta

Posted June 22, 2015 2:21am by Nikhil Pandey

Nikhil Pandey
1,418 Points
1 Answer
Martin Franzner
3,300 Points
found doc

Posted June 19, 2015 7:49pm by Martin Franzner

Martin Franzner
3,300 Points
0 Answers
Ricardo Gonzalez
2,286 Points
What exactly is it asking for?

Posted June 19, 2015 2:05am by Ricardo Gonzalez

Ricardo Gonzalez
2,286 Points
1 Answer
kamal bains
iOS Development Techdegree Student 1,522 Points
What is wrong with this code? It keeps asking me if I've used println() once and I have.

Posted June 18, 2015 7:31pm by kamal bains

kamal bains
iOS Development Techdegree Student 1,522 Points
2 Answers
David Lerdahl
728 Points
whats wrong with my code

Posted June 8, 2015 6:02pm by David Lerdahl

David Lerdahl
728 Points
0 Answers
MUZ141053 Macdonald Takaendesa
1,370 Points
am lost

Posted June 7, 2015 7:32am by MUZ141053 Macdonald Takaendesa

MUZ141053 Macdonald Takaendesa
1,370 Points
2 Answers
Josh Schlabach
1,771 Points
Not quite understanding this.

Posted June 4, 2015 12:11am by Josh Schlabach

Josh Schlabach
1,771 Points
1 Answer
German Kurbaji
2,943 Points
The preview doesn't give me any error but I still cannot compile it

Posted May 24, 2015 2:58pm by German Kurbaji

German Kurbaji
2,943 Points
0 Answers
PLUS

Casey Woelfle
Courses Plus Student 1,861 Points
Totally stuck on optionals in swift for iOS

Posted May 19, 2015 7:50am by Casey Woelfle

Casey Woelfle
Courses Plus Student 1,861 Points
1 Answer
Nigel Hall
4,650 Points
What is wrong with my code? I keep getting an error in my if let result line.

Posted May 13, 2015 9:06am by Nigel Hall

Nigel Hall
4,650 Points
1 Answer
Derek Kneisel
2,487 Points
Did you use println() one time - ERROR

Posted April 28, 2015 2:11am by Derek Kneisel

Derek Kneisel
2,487 Points
1 Answer
Adrian Yeow
13,866 Points
return nil

Posted April 22, 2015 5:20am by Adrian Yeow

Adrian Yeow
13,866 Points
1 Answer
Joe Dayvie
11,956 Points
Optionals in Swift

Posted April 15, 2015 5:40pm by Joe Dayvie

Joe Dayvie
11,956 Points
2 Answers
azumi yuan
3,126 Points
task 2 of 2 optionals

Posted April 15, 2015 6:02am by azumi yuan

azumi yuan
3,126 Points
1 Answer
Julio Fabio Chagas
996 Points
I typed the right answer but I got only Bummer!

Posted April 15, 2015 12:23am by Julio Fabio Chagas

Julio Fabio Chagas
996 Points
0 Answers
AR Ehsan
7,912 Points
Challenge Task 1 of 2 The search function below returns a name if it is found in

Posted April 13, 2015 2:42am by AR Ehsan

AR Ehsan
7,912 Points
1 Answer
PLUS

Alex Parkman
Courses Plus Student 1,659 Points
Help?

Posted April 7, 2015 4:09pm by Alex Parkman

Alex Parkman
Courses Plus Student 1,659 Points
2 Answers
Vincent Day
578 Points
Not sure what the error is here. I'm getting - Bummer! You need to define a `func` named `search` that retruns an opti

Posted April 1, 2015 2:07pm by Vincent Day

Vincent Day
578 Points
1 Answer
Marco Leo
1,007 Points
Don't understand what i'm doing wrong, can someone explain please?

Posted March 20, 2015 3:12pm by Marco Leo

Marco Leo
1,007 Points
1 Answer
Marco Leo
1,007 Points
Problem with if-let statment?

Posted March 20, 2015 2:38pm by Marco Leo

Marco Leo
1,007 Points
2 Answers
Darin Wilson
996 Points
Optionals "if let" statement iOS

Posted March 18, 2015 6:56pm by Darin Wilson

Darin Wilson
996 Points
2 Answers
Mohammed Hossain
555 Points
The search function below returns a name if it is found in the array and an empty string if it is not found. Modify the

Posted March 12, 2015 7:52pm by Mohammed Hossain

Mohammed Hossain
555 Points
2 Answers
Michael Metzger
4,529 Points
Xcode producing different result than workspace

Posted March 11, 2015 1:45am by Michael Metzger

Michael Metzger
4,529 Points
2 Answers
haydensteed
1,328 Points
whats wrong with this ?

Posted March 8, 2015 11:58pm by haydensteed

haydensteed
1,328 Points
1 Answer
Nick Chew
5,668 Points
Optional Challenge 1 of 2

Posted March 1, 2015 12:59pm by Nick Chew

Nick Chew
5,668 Points
3 Answers

Prev Page 2 of 3 Next

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.