Lessons
Swift · Easy
Swift · Easy. Ten lessons. Open-book quizzes. Lesson 1 free.
10 lessons · The Host · Lesson 1 free
Pass all ten lessons for the certificate. Sample · Claim
Lesson 1 · On the house
Enums and switch
Cases, associated values, exhaustive switch.
Lesson 2
Guard and early exit
guard let / guard conditions — fail fast.
Lesson 3
Throwing errors
Error, throws, try, do-catch.
Lesson 4
Closures
Syntax, trailing closures, capturing.
Lesson 5
map filter reduce
Array higher-order methods.
Lesson 6
Protocols
Requirements and conformance.
Lesson 7
Extensions
Add methods and computed properties.
Lesson 8
Generics
Functions and types over T.
Lesson 9
Classes vs structs
Reference vs value identity.
Lesson 10
Easy capstone
Enum + throws + protocol in one small flow.
Sample certificate
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Certificate
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