Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

iOS Swift Collections and Control Flow Introduction to Collections Working With Arrays

not quite sure if I typed this out correctly?

can I please get some help with this array question

array.swift
var arrayOfInts = [1,2,3,4,5,6]
arrayOfInts.append ("7")
[1,2,3,4,5,6] + [7]

1 Answer

John Marley
John Marley
8,418 Points

Hello,

In appending the array, the quotation marks around the "7" mean it is a String; arrays are 'homogenous' and can only accept one type of data like Ints, Strings, Doubles etc.

// arrayOfStrings would look like ["this", "is", "a", "string"]

arrayOfInts[0,1,2,3,4,5,6,7]
arrayOfInts.append(7)

The String concatenation you've done at the bottom passes the challenge too.

I hope this helps :)