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iOS Swift Basics (retired) Collections Modifying an Array

Daniel Walsh
Daniel Walsh
309 Points
Posted by Daniel Walsh
Daniel Walsh
309 Points

We need to append a few more items to our todo array. Append the following strings: "Debug App", "Fix Bugs".

Anyone know where I am going wrong with this? I thought they wanted me to enter in the todo.append tag but now I am not sure.

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

1 Answer

Jhoan Arango
Jhoan Arango
14,575 Points
Jhoan Arango
Jhoan Arango
14,575 Points

Hello Daniel:

There are 2 ways you can append or add an item into your array.

First : “You can add a new item to the end of an array by calling the array’s append method”

This only allows you to add ONE item at a time

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

todo.append("Debug App")
todo.append("Fix Bugs")

Second : “Alternatively, append an array of one or more compatible items with the addition assignment operator (+=):”

Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itun.es/us/jEUH0.l 

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

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

both of these codes work for your challenge.

Daniel Walsh
Daniel Walsh
309 Points
Daniel Walsh
Daniel Walsh
309 Points

Thanks man! That helped a lot!