Unit 3 Pathway 1: More Kotlin fundamentals

• Unit 3 Pathway 1 Activity 1: More Kotlin Fundamentals
• Unit 3 Pathway 1 Activity 2: Generics, Objects, Extensions
  • Introduction
    • Prerequisites
    • What you’ll learn
    • What you’ll need
  • Make a reusable class with generics
    • What is a generic data type?
    • Refactor your code to use generics
  • Use an enum class
    • Use an enum constant
  • Use a data class
    • Convert Question to a data class
  • Use a singleton object
    • Define a singleton object
    • Access a singleton object
    • Declare objects as companion objects
  • Extend classes with new properties and methods
    • Add an extension property
    • Add an extension function
  • Rewrite extension functions using interfaces
  • Use scope functions to access class properties and methods
    • Scope functions can eliminate repetitive object references
    • Use let() to replace long object names
    • Use apply() to call an object’s methods without a variable
  • Summary
• Unit 3 Pathway 1 Activity 3: Use collections in Kotlin
  • Introduction
    • Prerequisites
    • What you’ll learn
    • What you’ll need
  • Arrays in Kotlin
    • Access an element in an array
  • Lists
    • List and MutableList
    • The listOf() function
    • Access elements from a list
    • Iterate over list elements using a for loop
    • Add elements to a list
    • Update elements at a specific index
    • Remove elements from a list
  • Sets
    • Use a MutableSet in Kotlin
  • Map collection
  • Conclusion
• Unit 3 Pathway 1 Activity 4: Higher-order functions with collections
  • Introduction
    • Prerequisites
    • What you’ll learn
    • What you’ll need
  • forEach() and string templates with lambdas
    • Starter code
    • Loop over a list with forEach()
    • Embed expressions in strings
  • map()
  • filter()
  • groupBy()
  • fold()
  • sortedBy()
  • Conclusion
• Unit 3 Pathway 1 Activity 5: Practice: Classes and Collections
  • Before you begin
    • Prerequisites
    • What you’ll need
  • App overview
  • Task 1
  • Task 1 Solution
  • Task 2
  • Task 2 Solution
  • Task 3
  • Task 3 Solution
  • Task 4
  • Task 4 Solution
  • Task 5
  • Task 5 Solution
  • Task 6
  • Task 6 Solution
  • Task 7
  • Task 7 Solution