Kotlin Essential Training

Course details

Kotlin, the powerful programming language from JetBrains, offers null safety, concise syntax, and 100% Java compatibility. Plus, it's fully supported by Google for Android development. If you're looking to get up and running with this popular language, then this course is for you. Join instructor Troy Miles as he provides a comprehensive overview of what developers need to create command-line programs using the Kotlin programming language. Troy starts by covering the basics: data types and variables, how statements differ from expressions, and what the different types of expressions are. He then dives into all of the language's essential features, from functions and classes to coroutines, as well as how to effectively debug your Kotlin code.

Topics include:
- Working with variables
- Tips and tricks for working with functions
- Creating classes in Kotlin
- Working with companion objects
- Debugging your code
- Working with coroutines
- Handling canceled or timed-out tasks

Concepts

Introduction

Welcome
What you should know

Kotlin Development Preparations

Intellij IDEA installation and quick start guide

Data Types

Numeric data types
Mutable and immutable variables
Boolean and char data types
String tricks and traps

Control Flow

How statements differ from expressions
The if expression
The when expression
Loops with when expressions
Nulls and smart casting
Challenge - Replace an if expression with a when
Solution - Replace an if expression with a when

Collections and Sequences

When to use arrays
When to use lists
Sets best practices
How to use maps as dictionaries
Use collection operations
Sequences used in asynchronous data
Challenge - Remove duplicates from a list
Solution - Remove duplicates from a list

Input, Output, and Files

Command-line arguments
Get user input
Read and write file data
Challenge - Create and filter a list from a text file
Solution - Create and filter a list from a text file

Functions

Functions
Lambda functions
Anonymous functions
Local functions
Challenge - Pass a function to another function
Solution - Pass a function to another function

Classes, Objects, and Interfaces

Kotlin classes
Constructors and init block
The beauty of data classes
Class composition with interfaces
Companion objects
Challenge - Count instances of a class
Solution - Count instances of a class

Debug Your Kotlin Code

Set unconditional and conditional breakpoints
Watch variables and change their values

Harness the Power of Coroutines

The need for coroutines
How to handle canceled and timed-out tasks
Challenge - Read a file in the background
Solution - Read a file in the background

Conclusion

Next steps