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iOS Swift Basics (retired) Collections Modifying an Array

Posted by Jordan Roberts
Jordan Roberts
945 Points

I am trying to insert a new item at a specific place in the array using todo.insert and its not working, what am i doing

I am trying to insert a new item at a specific place in the array using todo.insert and its not working, what am i doing wrong.

In playground this works. todo.insert("Learn iOS", atIndex: 1)

arrays.swift 
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.append("Learn iOS", atIndex: 1)

3 Answers

Petar Popovic
Petar Popovic
Courses Plus Student 23,421 Points

Hi Jordan, let me try to explain.

First of all, you deleted both "Build app" and "Deploy app" by writing this

todo.removeAtIndex(1)

let item = todo.removeAtIndex(1)

and you need to delete only "Deploy app".

Second, you are trying to append at index which can't be done, we use .insert for that. Like this:

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

This is correct

var todo = ["Learn Swift", "Build App", "Deploy App"]
todo += ["Debug App", "Fix Bugs"]
let item = todo.removeAtIndex(2)

todo.insert("Learn iOS", atIndex: 1)
Jordan Roberts
Jordan Roberts
945 Points
Jordan Roberts
Jordan Roberts
945 Points

Dang. I was going about it in a more complicated way than necessary. So close. Thank you so much, Petar!

Such a newb. :/

Petar Popovic
PLUS
Petar Popovic
Courses Plus Student 23,421 Points
Petar Popovic
Petar Popovic
Courses Plus Student 23,421 Points

You're welcome, I am glad I helped.

And don't be discouraged. Keep learning and keep practicing, that is the only way to become good at programing. And even then you will not have all answers and you'll need to search for a solution on google or ask other people for help.

That is programing :)