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iOS Swift Basics (retired) Collections Modifying an Array

Travis Trevisan
Travis Trevisan
5,846 Points
Posted by Travis Trevisan
Travis Trevisan
5,846 Points

having problems passing the test, here is my code. todo.insert("Learn iOS", atIndex: 2) todo

// Playground - noun: a place where people can play

import UIKit

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

let item = todo.removeAtIndex(2) item

todo.insert("Learn iOS", atIndex: 2) todo

//it works in Xcode, just not on the site?

arrays.swift 
var todo = ["Learn Swift", "Build App", "Deploy App", "Debug App", "Fix Bugs"]

let item = todo.removeAtIndex(2)
item

todo.insert("Learn iOS", atIndex: 2)
todo
Alex Lobert
Alex Lobert
2,736 Points
Alex Lobert
Alex Lobert
2,736 Points

Hi Travis,

Two thoughts:

  1. if it let you get to third piece of the challenge, your issue is that you aren't assigning "Learn iOS to the 2nd position, you are are assigning it to the third - arrays start counting at 0 not 1.

todo.insert("Learn iOS", atIndex: 1)

  1. Additionally thought... when adding items to an array, you probably want to use an operator like "+=" the addition assignment operator to do this instead of rewriting the array.

todo += ["Debug App", "Fix Bugs"]

Hope that helps.

-Alex

2 Answers

john dev.
PLUS
john dev.
Courses Plus Student 1,935 Points
john dev.
john dev.
Courses Plus Student 1,935 Points

Hello Travis Trevisan. I am "sorry" if I misunderstood you. I think you forgot the "colon" in the first line. Here is my solution for you. I hope it helps you!

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

let item = todo.removeAtIndex(2) item

todo.insert("Learn iOS", atIndex: 2) todo

john

Travis Trevisan
Travis Trevisan
5,846 Points
Travis Trevisan
Travis Trevisan
5,846 Points

thanks John and Alex!

John I've been using the same code that you demonstrated, no luck, I'm just going to move on, because the code I'm using works in Xcode!

Thanks for the help! - Travis

john dev.
john dev.
Courses Plus Student 1,935 Points

Okay, I am "sorry". Good luck!