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

## Lambda expressions
In the previous lesson, we started by trying to understand the following line of code:
```kotlin
var lengths = strings.map {it.length}
```

But what about the strange curly braces?

To introduce the curly braces, we need to ‘inline’ our transformation function.

Like any other variable, we can inline `getLengthOfString` by replacing that reference directly with its true value. In this case, this will be the transformation function itself. This is how it’s done:





# Lambda expressions
In the previous lesson, we started by trying to understand the following line of code:
```kotlin
var lengths = strings.map {it.length}
```

But what about the strange curly braces?

To introduce the curly braces, we need to ‘inline’ our transformation function.

Like any other variable, we can inline `getLengthOfString` by replacing that reference directly with its true value. In this case, this will be the transformation function itself. This is how it’s done:





Learn about lambda expressions in Kotlin.

About the course

Understanding Kotlin Code

Some Interesting Kotlin Features

More Kotlin Magic

Conclusion

Higher-order Functions (part-II)

Lambda expressions