Learn Swift Programming Syntax

What you will learn

1. Swift Basics

   • An introduction to Swift types and operators.
   • Develop deftness in defining variables and constants.
   • Practice what you've learned with exercises in Swift playgrounds.

2. Optional Types

   • Declare explicitly and implicitly unwrapped optionals.
   • Unwrap optionals using both optional binding and optional chaining.
   • Practice safely unwrapping optionals and learn to avoid errors.

3. Swift Collections

   • Learn about the Swift Collection Types: Dictionaries, Arrays, and Sets.
   • Perform basic operations including: append, count, insert, remove, update, find, and retrieve.
   • Practice manipulating collections with exercises in Swift playgrounds.

4. Control Flow: Loops, If statements, and Switches

   • Practice fast iteration with for-in loops by iterating through items in Arrays and Dictionaries.
   • Create programming logic of increasing complexity with if-else statements.
   • Delight in the convenience and conciseness of Swift switch statements.

5. How to Write and Call Functions in Swift

   • Define and call functions.
   • Correctly use local and external parameters.
   • Identify parameter types and return types.

6. Classes, Properties, and Methods

   • Practice building custom classes with their own properties and methods.
   • Learn about type properties and computed properties.
   • See example use cases for type methods and instance methods.

7. Enums and Structs

   • Learn the difference between value types and references types.
   • Practice choosing when to use enums, structs, and classes.
   • Use enums to make your switch statements extra Swifty.

8. Protocols and Extensions

   • Learn how protocols and extensions can help keep your code DRY.
   • Given a series of code snippets, fix compiler errors by implementing protocols.
   • Edit the code in a sample app to see extensions in action.

9. Closure Expressions

   • Practice using Swift closures with the functions, sorted() and filter().
   • Learn shorthand closure expression syntax to make your closures super concise.
   • See how closures are used in animations in the method, animateWithDuration.