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Kotlin Blueprints

You're reading from   Kotlin Blueprints A practical guide to building industry-grade web, mobile, and desktop applications in Kotlin using frameworks such as Spring Boot and Node.js

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Product type Paperback
Published in Dec 2017
Publisher Packt
ISBN-13 9781788390804
Length 260 pages
Edition 1st Edition
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Authors (3):
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Akshay Chordiya Akshay Chordiya
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Akshay Chordiya
Ashish Belagali Ashish Belagali
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Ashish Belagali
Hardik Trivedi Hardik Trivedi
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Hardik Trivedi
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Toc

Creating a social media aggregator

You will build an app that may look like the following:

UI representation of social media aggregator

And an application directory that will look like the following:

 Application directory

Using datatypes and conversion

In Kotlin, everything is an object. Kotlin has pretty much the same number of related data types compared to Java. But they are not exactly the same.

In Java, the following is true:

    int num=10;
double bigNum=num;

But in Kotlin if you try to do such a thing it will give a compile-time error. This means implicit widening is not allowed in Kotlin. However, the main thing we want to discuss in this section is, with every number type Kotlin supports some explicit conversion...

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