Android Learn & Inspire Series - Kotlin

Unit 2 Pathway 1:
Kotlin Fundamentals

Transcript

1. Android Learn & Inspire Series Unit 2 Pathway 1: Kotlin Fundamentals By: Eldho P James https://www.linkedin.com/in/eldhopj/
2. If/else condition
3. When Similar to switch case but more powerful than switch case
4. When with multiple branches
5. When with range
6. Nullability
7. Classes and Object
8. Constructor In Kotlin, there are two constructors: • Primary constructor - concise way to initialize a class • Secondary constructor - allows you to put additional initialization logic • Init block
9. Constructor (Cont…)
10. Inheritance All classes and functions in kotlin are by default final Open Keyword to make it non final If we want to override we have to use override keyword We can use super keyword to access the parent class properties
11. IS-A HAS-A Relationship
12. Visibility Modifiers
13. Delegation • The Delegation pattern • Efficient way of writing Inheritance • Kotlin supports it natively requiring zero boilerplate code • Its a design pattern by introducing a keyword “by”. • Advantage of using delegation is single responsibility principle
14. Lambda expression syntax
15. Higher Order Function A function that takes function as a param or returns a function
16. Extension Function With Extension function we can extend a class with new functionalities