Build Your Swift Skills - Lesson 6 - Dictionary

You've learned about Arrays. Now it's time to learn about Dictionaries which is another highly used and highly useful tool to keep track of collections of data!

While the Array excels at storing ordered collections, the Dictionary shines at retrieving exactly the piece of data you need, when you need it.

In this lesson, I’ll tell you all about how Dictionaries work and how to use them. You'll also learn when to use an Array versus when to use a Dictionary to hold your data!

Finally, don't forget to download the worksheet below to get extra practice!

To download the code, projects, worksheets and assets, visit:

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DID THESE LESSONS HELP YOU?

[avanishpatel]

Awesome bro, you are the best teacher in my life I ever seen

[JamesTeachesPiano]

What a great final comparison between an array and a dictionary. Thanks, Chris.

[Simon-ronh]

Great tutorial again. The final comparison really helps a lot! Thank you Chris!

[TJHooper]

awesome. This definitely helped me differentiate between arrays and dictionaries.

[sjakan]

Hi, Thanks for your videos, they are really good. Now I have come to a point where I struggle. I make an App with two buttons with drop down menus. Where I want the upper button with “car brands” to control what the lower button shows “car models”. The brand and models are assigned to each button in arrays. Are you able to give me a push forward here?

[allin]

Very good, thank you
Waiting for next.

[AAAJ]

Thank you so much!! Your videos are rly good :)

[yagasmurf]

can you have a mixed type definition like ["salary":50, 000] or [String:Int] ?

[afzalshaik]

Chris Can I run xcode in Windows PC? If yes pls share a link to download .

[bbz]

Hi Chris, I like your lessons.
The Dictionary can contain different type of data as [Bool:Int]. How it cab be used?

[petridesDZiB]

I did remove this way:
"key")
is the effect the same?

[Nik_]

For if statement I get an error that ‘nil’ cannot be assigned to type’ string’. Why ?