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
Implement an extension function, `reverseArray()`, for the `intArray` class, to reverse the order of a given array.

## Sample test case
This is how we’ll test the extension function:

``` kotlin
var array = intArrayOf(1, 3, 4, 6, 7)
array.reverse_()
```
## Expected output
``` kotlin
array => [7, 6, 4, 3, 1]
```

## Business logic
The following illustration shows one of the ways to accomplishthis:

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

About the course

Understanding Kotlin Code

Some Interesting Kotlin Features

More Kotlin Magic

Conclusion

Challenge: Write an Extension Function to Reverse an Array

Problem statement