Free
CourseLearn Swift: Optionals
Learn how to define functions and handle values that might be absent using optionals in Swift.
This course includes
This course includes
Skill level
IntermediateTime to complete
Average based on combined completion rates — individual pacing in lessons, projects, and quizzes may vary2 hoursProjects
1Prerequisites
None
About this course
Continue your Swift learning journey with Learn Swift: Optionals. Sometimes when we work with data, we find that information is missing. Handle values that might be absent by learning how to use optionals.
Syllabus
Optionals
Learn how to use optionals to handle data that might be nil.
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Meet the creator of the course
Kenny Lin
Web Development Domain Manager at CodecademyEarn a certificate of completion
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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.ChrisCodecademy 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.RodrigoCodecademy Learner @ UK
- Brilliant learning experience. Very interactive. Literally a game changer if you're learning on your own.John-AndrewCodecademy Learner @ USA
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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.