Finally, we forgot to add that we need to learn iOS development prior to building an app

Question

I don't understand why is not working. Can somebody please show some light. :(

Here is my code...

var todo = ["Learn Swift", "Build App", "Deploy App"] todo.append("Debug App") todo.append("Fix Bugs") todo.removeAtIndex (1) let item = todo.removeAtIndex (1) todo.insert("Learn iOS", atIndex: 1)

arrays.swift

var todo = ["Learn Swift", "Build App", "Deploy App"]
todo += ["Debug App", "Fix Bugs"]
todo.removeAtIndex(1)
let item = todo.removeAtIndex(1)
todo.insert("Learn iOS", atIndex: 1)

Answer 1 · 2015-02-26T05:24:44Z

February 26, 2015 5:24am

Hello, Erik Figueroa .

The problem you have in your code is these two lines you wrote at part 2 of the challenge

todo.removeAtIndex(1)
let item = todo.removeAtIndex(1)

Please remove the third item ("Deploy App") and assign it to a constant named item.

The challenge is asking you to remove ONLY the third item from the list and assign it to constant item; but with the above 2 lines of code, you removed both the 2nd and 3rd item from the list, and assigned 3rd item to constant item.

So, even though part 2 challenge's grader let you pass, because it checks that your constant item is having the correct value; however, when you get to part 3 of the challenge, though your code todo.insert("Learn iOS", atIndex: 1) is 100% the correct solution, there's no way you can pass it because you've permanently removed the 2nd item from todo in the previous challenge which the grader is expecting todo to have.

The correct way to go about solving part 2 challenge is do it in just one line

let item = todo.removeAtIndex(2)

And the rest of your code is correct.

Answer 2 · 2015-02-26T01:55:38Z

February 26, 2015 1:55am

The question is this:

Finally, we forgot to add that we need to learn iOS development prior to building an app. Insert a new item titled "Learn iOS" at the second position in the todo array.

My Code is this:

var todo = ["Learn Swift", "Build App", "Deploy App"] todo += ["Debug App", "Fix Bugs"]

todo.removeAtIndex(1) let item = todo.removeAtIndex(1) todo.insert("Learn iOS", atIndex: 0)

Error is this:

ummer! Your 'todo' variable has the wrong value in it.

I'm giving it the right code ( I think) and still not working. I need to add "Learn iOS" to index 1 without removing anything. Otherwise I get the error.

Answer 3 · 2015-02-26T02:00:37Z

February 26, 2015 2:00am

var todo = ["Learn Swift", "Build App", "Deploy App", "Debug App", "Fix Bugs"] todo.insert("Learn iOS", atIndex: 1)

Can you leave the code as simply as this? It works under playgrounds. It outputs: [Learn Swift, Learn iOS, Build App, Deploy App, Debug App, Fix Bugs]

Might be due to the +=

Answer 4 · 2015-02-26T02:04:33Z

February 26, 2015 2:04am

Man, this one exercise really got me. It works just fine on Playgrounds. Thanks for the replies though.

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Erik Figueroa

Erik Figueroa

Finally, we forgot to add that we need to learn iOS development prior to building an app

Dougie Swallow

Dougie Swallow

4 Answers

William Li

William Li

Erik Figueroa

Erik Figueroa

Erik Figueroa

Erik Figueroa

Erik Figueroa

Erik Figueroa

Dougie Swallow

Dougie Swallow

Erik Figueroa

Erik Figueroa