Learn Swift: Arrays, Sets, and Dictionaries

Continue your Swift journey by learning these collection types: arrays, sets, and dictionaries!
Continue your Swift learning journey! Incorporate collection types that allow you to store data in a meaningful way. Arrays store elements and keep the ordering, sets can sort a collection of unique data, and dictionaries create unique key-value pairs. Having these concepts under your toolbelt will ensure that you are able to store, access, and manipulate valuable information.



### Take-Away Skills
By the end of this course, you will be able to:
* Create lists of ordered information using arrays.
* Create collections of unique information using sets.
* Create unique key-value pairs with a dictionary.
* Identify when to use a specific collection type.
* Manipulate the data within arrays, sets, and dictionaries.


### Notes on Prerequisites
We recommend that you complete [Learn Swift: Variables](https://www.codecademy.com/learn/learn-swift-control-flow-and-loops) before completing this course.

• Arrays & Sets: Learn how to use Swift arrays and sets to keep your data organized.
• Lesson: Arrays
• Quiz: Arrays
• Project: Make a Mixtape 101
• Project: Palindrome
• Project: Caesar's Cipher
• Lesson: Sets
• Quiz: Sets
• Project: School Roster
• Dictionaries: Learn how to store pairs of data using the dictionary collection type.
• Lesson: Dictionaries
• Article: What are Tuples?
• Quiz: Dictionaries
• Article: if-let Statements
• Project: Morse Decoder
• Informational: Next Steps