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iOS Swift 2.0 Collections and Control Flow Introduction to Collections Working with Arrays

Posted by Mitchell Warmerdam
Mitchell Warmerdam
4,225 Points

Assigning results to a constant named value in Swift

Hi! I'm stuk on this challgenge:

Challenge Task 3 of 4

We also learned about reading values from an array. Retrieve the 5th item (remember array indexes start at 0) and assign the result to a constant named value.

My code is:

var arrayOfInts = [1,2,3,4,5,6]

arrayOfInts.append(7) arrayOfInts += [8]

arrayOfInts[4] = "constant"

6 Answers

Michael Reining
Michael Reining
10,101 Points
Michael Reining
Michael Reining
10,101 Points

Hi Mitchell,

The problem is in your last line of code.

The challenge asks you to create a new constant called "value" and assign the 5th item of the array to the new constant.

// Enter your code below
var arrayOfInts = [0,1,2,3,4,5]
arrayOfInts.append(6)
arrayOfInts += [7]

// Let's break it down
// Create new constant called "value"
// Set it's value to the 5th item of the integer array

let value = arrayOfInts[4]

I hope that helps,

Mike

PS: Thanks to the awesome resources on Team Treehouse, I just launched my first app. :-)

Code! Learn how to program with Swift

Robert Brown
Robert Brown
12,269 Points

Where did you "value" as a key word to use? There was nothing like this used in the videos.

Was stock on this for over half hour and still don't see where I would have found the use of "value"

leonardmichalas
leonardmichalas
601 Points

Hey, I stucked at the same point because I named my constant "result". Writing the name of the constant in " " might be less confusing.

So I think the task should be like this:

We also learned about reading values from an array. Retrieve the 5th item (remember array indexes start at 0) and assign the result to a constant named "value".

ille
ille
2,275 Points
ille
ille
2,275 Points

sometimes this stuff really confuses me! this really is getting frustrating spending 30 mins trying to figure it out! thanks for the solution

Dimang Chou
Dimang Chou
4,697 Points
Dimang Chou
Dimang Chou
4,697 Points

Thanks for your solution.

ALAN SALDANA
ALAN SALDANA
357 Points
ALAN SALDANA
ALAN SALDANA
357 Points

that doesn't work at all

Kellington Chidza
Kellington Chidza
866 Points
Kellington Chidza
Kellington Chidza
866 Points

let value = arrayOfInts[4]

Quentin Jobs
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Quentin Jobs
UX Design Techdegree Graduate 23,599 Points
Quentin Jobs
.a{fill-rule:evenodd;}techdegree seal-36
Quentin Jobs
UX Design Techdegree Graduate 23,599 Points

First I had: arrayOfInts[4] let value = arrayOfInts[4] I wrote this code because I thought that I had to show where/how I retrieved the 5th item. So I was stuck on this for ages unless I took out my first line and left the second.