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Android Development with Kotlin

You're reading from   Android Development with Kotlin Enhance your skills for Android development using Kotlin

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Product type Paperback
Published in Aug 2017
Publisher Packt
ISBN-13 9781787123687
Length 440 pages
Edition 1st Edition
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Authors (2):
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Marcin Moskala Marcin Moskala
Author Profile Icon Marcin Moskala
Marcin Moskala
Igor Wojda Igor Wojda
Author Profile Icon Igor Wojda
Igor Wojda
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Table of Contents (10) Chapters Close

Preface 1. Beginning Your Kotlin Adventure FREE CHAPTER 2. Laying a Foundation 3. Playing with Functions 4. Classes and Objects 5. Functions as First-Class Citizens 6. Generics Are Your Friends 7. Extension Functions and Properties 8. Delegates 9. Making Your Marvel Gallery Application

Casts

The casting concept is supported by many programming languages. Basically, casting is a way to convert an object of one particular type into another type. In Java, we need to cast an object explicitly before accessing its member, or cast it and store it in the variable of the casted type. Kotlin simplifies concept of casting and moves it to the next level by introducing smart casts.

In Kotlin, we can perform a few types of cast:

  • Cast objects to different types explicitly (safe cast operator)
  • Cast objects to different types, or nullable types to non-nullable types, implicitly (smart cast mechanism)

Safe/unsafe cast operator

In strongly typed languages, such as Java or Kotlin, we need to convert values from one type...

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