Free
Course

Learn Swift: Arrays, Sets, and Dictionaries

Continue your Swift journey by learning these collection types: arrays, sets, and dictionaries!

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  • Skill level

    Beginner

  • Time to complete

    Approx. 8 hours

  • Certificate of completion

    Included with paid plans

  • Prerequisites

    None

About this course

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.

Syllabus

3 lessons • 5 projects • 3 quizzes
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The platform

Hands-on learning

Don’t just watch or read about someone else coding — write your own code live in our online, interactive platform. You’ll even get AI-driven recommendations on what you need to review to help keep you on track.
Animated demonstration of running code in Codecademy's learning environment

Projects in this course

Meet the creator of the course
Meet the full team
Kenny Lin
Web Development Domain Manager at Codecademy
Kenny is the Domain Manager for the Web Development Domain at Codecademy. He contributed to a wide range of courses and paths at Codecademy, including JavaScript, Bootstrap, Handlebars, Phaser.js, Go, Swift, TypeScript, and Lua.
Meet the full team

Reviews from learners

  • The progress I have made since starting to use codecademy is immense! I can study for short periods or long periods at my own convenience - mostly late in the evenings.
    Chris
    Codecademy Learner @ USA
  • I felt like I learned months in a week. I love how Codecademy uses learning by practice and gives great challenges to help the learner to understand a new concept and subject.
    Rodrigo
    Codecademy Learner @ UK
  • Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.
    John-Andrew
    Codecademy Learner @ USA

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Unlock additional features with a paid plan

  • Practice Projects

    Guided projects that help you solidify the skills and concepts you're learning.

  • Assessments

    Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.

  • Certificate of Completion

    Earn a document to prove you've completed a course or path that you can share with your network.
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Join over 50 million learners and start Learn Swift: Arrays, Sets, and Dictionaries today!

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