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Kotlin Programming Cookbook

You're reading from   Kotlin Programming Cookbook Explore more than 100 recipes that show how to build robust mobile and web applications with Kotlin, Spring Boot, and Android

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Product type Paperback
Published in Jan 2018
Publisher
ISBN-13 9781788472142
Length 434 pages
Edition 1st Edition
Languages
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Authors (2):
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Aanand Shekhar Roy Aanand Shekhar Roy
Author Profile Icon Aanand Shekhar Roy
Aanand Shekhar Roy
Rashi Karanpuria Rashi Karanpuria
Author Profile Icon Rashi Karanpuria
Rashi Karanpuria
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Toc

Table of Contents (16) Chapters Close

Preface 1. Installation and Working with Environment FREE CHAPTER 2. Control Flow 3. Classes and Objects 4. Functions 5. Object-Oriented Programming 6. Collections Framework 7. Handling File Operations in Kotlin 8. Anko Commons and Extension Function 9. Anko Layouts 10. Databases and Dependency Injection 11. Networking and Concurrency 12. Lambdas and Delegates 13. Testing 14. Web Services with Kotlin 15. Other Books You May Enjoy

Initializing body of constructor

In the Java world, we used to initialize fields of the class in the constructor, as shown in this code:

class Student{
int roll_number;
String name;
Student(int roll_number,String name){
this.roll_number =roll_number;
this.name = name;
}
}

So, if the argument's name was similar to that of the property (which was usually the case for making the code more readable), we needed to use this keyword. In this recipe, we will see how to implement the same thing in Kotlin (obviously with much less code).

Getting ready

You need an IDE to write and execute your code. I'll be using IntelliJ IDEA. We will create a Student class with name and roll_number as properties.

...
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