Treehouse | Community | Review: First Class Functions

Invest in Your Future 💫 2025 Is Yours! Kick off your New Year's Resolutions with 1 year of Treehouse for $150!

Woohoo! A new Figma course has dropped! 🤩

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

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

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

Newest
- Newest
- Active
- Unanswered
- Featured
All Topics

Darcy Phillips
4,087 Points
higher order function question

Posted November 7, 2016 7:57pm by Darcy Phillips

Darcy Phillips
4,087 Points
2 Answers
Ronit Mankad
12,166 Points
Unknown Error!

Posted September 29, 2016 4:55pm by Ronit Mankad

Ronit Mankad
12,166 Points
1 Answer
Kevin Gutowski
4,082 Points
Why didn't we specify what the optional parameter was for someFunction?

Posted August 20, 2016 12:54am by Kevin Gutowski

Kevin Gutowski
4,082 Points
1 Answer
matt taylor
7,476 Points
Why is this useful?

Posted August 9, 2016 8:54pm by matt taylor

matt taylor
7,476 Points
0 Answers
john ledesma
6,944 Points
Can someone please help me with this problem, I am not sure what is wrong. This compiles in playground.

Posted August 9, 2016 8:23pm by john ledesma

john ledesma
6,944 Points
0 Answers
Abderrahim Gdah
1,326 Points
i didn't understand what does it mean ?

Posted July 23, 2016 1:16pm by Abderrahim Gdah

Abderrahim Gdah
1,326 Points
0 Answers
Batuhan Ertas
1,159 Points
can anyone say what's wrong with that code?

Posted July 17, 2016 8:34pm by Batuhan Ertas

Batuhan Ertas
1,159 Points
0 Answers
Aditya Ramabadran
3,746 Points
"Closest multiple of six?"

Posted July 14, 2016 1:19am by Aditya Ramabadran

Aditya Ramabadran
3,746 Points
2 Answers
Kieran Tross
8,266 Points
In an extension to the String type, add a function named modify. The modify function should accept as an argument a func

Posted July 13, 2016 1:44am by Kieran Tross

Kieran Tross
8,266 Points
3 Answers
patrick ridd
21,011 Points
I can't find a String.CharacterView method that returns first letter as String in the documentation. Any luck anyone?

Posted July 12, 2016 3:15am by patrick ridd

patrick ridd
21,011 Points
1 Answer
PLUS

Napatchol Thaipanich
Courses Plus Student 13,534 Points
how to do it

Posted June 19, 2016 11:05am by Napatchol Thaipanich

Napatchol Thaipanich
Courses Plus Student 13,534 Points
1 Answer
Tyler Travis
2,429 Points
My code functions properly in Xcode and performs correctly but doesn't pass the test. What is going wrong?

Posted June 18, 2016 5:28am by Tyler Travis

Tyler Travis
2,429 Points
1 Answer
Tyler Travis
2,429 Points
What am I doing wrong? Perhaps I am just misunderstanding the question.

Posted June 17, 2016 7:38am by Tyler Travis

Tyler Travis
2,429 Points
0 Answers
Mingzhe Zheng
27,273 Points
No idea how to get the first letter in String

Posted June 16, 2016 3:35am by Mingzhe Zheng

Mingzhe Zheng
27,273 Points
3 Answers
Javier Porras
11,382 Points
stuck on part 2 of 3 of the challenge.

Posted June 9, 2016 6:40pm by Javier Porras

Javier Porras
11,382 Points
6 Answers
Javier Porras
11,382 Points
Stuck on task 2 of 3; extending String, and function code.

Posted June 9, 2016 5:51pm by Javier Porras

Javier Porras
11,382 Points
1 Answer
Arsene Lavaux
4,342 Points
Extract first character of Swift String object instance using the characters property

Posted June 4, 2016 7:46pm by Arsene Lavaux

Arsene Lavaux
4,342 Points
2 Answers
Josep Bordes
7,752 Points
I don't know how to use the property characters. I m using String(string.characters.first).

Posted May 31, 2016 6:16pm by Josep Bordes

Josep Bordes
7,752 Points
1 Answer
Sheng Wei
4,382 Points
[Help!] Not sure how to return the characters property in this closure

Posted May 30, 2016 8:31am by Sheng Wei

Sheng Wei
4,382 Points
1 Answer
Arthur Rubio
4,657 Points
I'm having difficulty with the challenge: Write a function named addTwo, task 1 of 2

Posted May 24, 2016 9:17pm by Arthur Rubio

Arthur Rubio
4,657 Points
4 Answers
nicholasdevereaux
16,353 Points
Closures - Challenge Task 3 of 3. How does this code know to return the first letter in a string?

Posted May 21, 2016 11:57am by nicholasdevereaux

nicholasdevereaux
16,353 Points
1 Answer
nicholasdevereaux
16,353 Points
Closures - how to use 'characters' property without force unwrapping?

Posted May 21, 2016 11:39am by nicholasdevereaux

nicholasdevereaux
16,353 Points
1 Answer
Ignacio Opazo
8,950 Points
Hi guys, i'm trying to get the last step in this exercise, but i stucked in this part of code...

Posted May 16, 2016 2:06pm by Ignacio Opazo

Ignacio Opazo
8,950 Points
1 Answer
khoipro
10,821 Points
I've got an issue with Closures in Swift 2's challenge

Posted May 15, 2016 2:38pm by khoipro

khoipro
10,821 Points
0 Answers
PLUS

Akshay Kalbhor
Courses Plus Student 725 Points
firstLetter function in Challenge Task 2 of 3

Posted May 12, 2016 8:07am by Akshay Kalbhor

Akshay Kalbhor
Courses Plus Student 725 Points
1 Answer
Brian Cao
1,390 Points
what does it mean to have a function as a constant?

Posted May 10, 2016 3:01am by Brian Cao

Brian Cao
1,390 Points
2 Answers
Johann Peters
40,749 Points
Something's messed up in this challenge!?

Posted May 6, 2016 11:04am by Johann Peters

Johann Peters
40,749 Points
3 Answers

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