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Learn Spring for Android Application Development

You're reading from   Learn Spring for Android Application Development Build robust Android applications with Kotlin 1.3 and Spring 5

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Product type Paperback
Published in Jan 2019
Publisher Packt
ISBN-13 9781789349252
Length 392 pages
Edition 1st Edition
Languages
Tools
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Authors (2):
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S. M. Mohi Us Sunnat S. M. Mohi Us Sunnat
Author Profile Icon S. M. Mohi Us Sunnat
S. M. Mohi Us Sunnat
Igor Kucherenko Igor Kucherenko
Author Profile Icon Igor Kucherenko
Igor Kucherenko
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Toc

Table of Contents (13) Chapters Close

Preface 1. About the Environment 2. Overview of Kotlin FREE CHAPTER 3. Overview of Spring Framework 4. Spring Modules for Android 5. Securing Applications with Spring Security 6. Accessing the Database 7. Concurrency 8. Reactive Programming 9. Creating an Application 10. Testing an Application 11. Assessments 12. Other Books You May Enjoy

Functions

To define a function in Kotlin, you have to use the fun keyword, as follows:

fun firstClass() {
println("First class function")
}

The preceding snippet demonstrates that we can declare functions as first class citizens. We can also define functions as class members, as follows:

class A {
fun classMember() {
println("Class member")
}
}

A local function is a function that is declared in another one, as follows:

fun outer() {
fun local() {
println("Local")
}

local()
}

In the preceding snippet, the local function is declared inside of the outer function. The local functions are only available in the scope of a function where they were declared. This approach can be useful if we want to avoid duplicate code inside of a function.

This section will cover the following topics:

  • Functional programming
  • Higher-order...
You have been reading a chapter from
Learn Spring for Android Application Development
Published in: Jan 2019
Publisher: Packt
ISBN-13: 9781789349252
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