Gain insights into Kotlin’s syntax, type inference, higher-order functions, classes, operator overloading, and extension functions. Explore key features to enhance your efficiency in Kotlin development.

kotlin.tar.gz

Kotlin

Kotlin-1

Kotlin is an elegant general-purpose language with a rich syntax that enables us to write concise and expressive code. Much of its appeal also stems from the fact that it is fully interoperable with Java and has multi-platform support. Kotlin is also an official Android language ranked by Google as the most preferred language for Android app development.

In this course, you’ll learn about type inference in Kotlin as well as about Kotlin’s support for higher-order functions. You’ll cover classes, objects, and other interesting themes relevant to these topics. You’ll finish with operator overloading, extension functions, and scoping functions.

This course is specially designed for Java professionals who want to get into Kotlin development with minimal time and effort. This is not an encyclopedic work on Kotlin. Rather, it focuses on the necessary foundations and the best features that Kotlin has to offer. After completing this course, you’ll feel more comfortable reading and writing Kotlin code.

Kotlin Compact

# Problem statement

In this challenge, we want to multiply two complex numbers by overloading the `*` operator. 

Multiplication between complex numbers takes place as illustrated in the example below: 

In general, 

$$(a+bi)(c+di) = \underbrace{ac-bd}_{real}+\underbrace{(ad+bc)i}_{imaginary}$$  


The code for creating the `Complex` class is given as follows: 

```kotlin
class Complex(var real: Double = 0.0 , var img: Double = 0.0)
{
}
```
Your task is to overload the `*` operator in the given class. For this, you have to implement an operator overloading method that will take a complex number as an argument and return the product of two complex numbers.

Test your understanding by solving the challenge given in this lesson.

About the course

Understanding Kotlin Code

Some Interesting Kotlin Features

More Kotlin Magic

Conclusion

Challenge: Operator Overloading

Problem statement