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Coddy

Learn Swift

via Coddy

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Overview

A free, interactive online Swift course. You write Swift on every lesson, with AI hints when an optional surprises you, and a free certificate when you finish.

  • Handle optionals safely with if-let and guard
  • Build value types with structs and enums
  • Use protocols and extensions for clean composition
  • Apply closures and higher-order functions in idiomatic Swift

Syllabus

Fundamentals

  • Introduction
  • Variables
  • Optionals
  • Operators Part 1
  • Operators Part 2
  • Decision Making
  • Basic IO
  • Bill Split Calculator
  • Loops
  • Functions
  • FizzBuzz with a Twist
  • Arrays Basics
  • Iterating Over Sequences
  • Arrays Advanced
  • Daily Expense Tracker
  • Final Challenges

Logic & Flow

  • Strings In Depth
  • Ranges & Strides
  • Dictionaries
  • Sets
  • Higher-Order Functions Pt1
  • Higher-Order Functions Pt2
  • Project - Habit Tracker
  • Closures
  • Error Handling
  • Project - Quiz Engine
  • Final Challenges

Object Oriented Programming

  • Classes and Objects
  • Structs and Value Types
  • Properties in Depth
  • Encapsulation
  • Inheritance
  • Protocols
  • Polymorphism and Generics
  • Standard Protocols
  • Design Patterns Part 1
  • Design Patterns Part 2
  • Project: Library Management
  • Final Challenges

Introduction to SwiftUI

  • Introduction
  • Showing Content
  • Stacks & Layout
  • Modifiers
  • State & Buttons
  • User Input
  • Lists
  • Navigation
  • Sharing Data
  • Project - Coddy Coffee
  • Final Challenges

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