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Learn Kotlin Programming

Learn Kotlin Programming - Second Edition

By : Samuel, Bocutiu
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Learn Kotlin Programming

Learn Kotlin Programming

By: Samuel, Bocutiu

Overview of this book

Kotlin is a general-purpose programming language used for developing cross-platform applications. Complete with a comprehensive introduction and projects covering the full set of Kotlin programming features, this book will take you through the fundamentals of Kotlin and get you up to speed in no time. Learn Kotlin Programming covers the installation, tools, and how to write basic programs in Kotlin. You'll learn how to implement object-oriented programming in Kotlin and easily reuse your program or parts of it. The book explains DSL construction, serialization, null safety aspects, and type parameterization to help you build robust apps. You'll learn how to destructure expressions and write your own. You'll then get to grips with building scalable apps by exploring advanced topics such as testing, concurrency, microservices, coroutines, and Kotlin DSL builders. Furthermore, you'll be introduced to the kotlinx.serialization framework, which is used to persist objects in JSON, Protobuf, and other formats. By the end of this book, you'll be well versed with all the new features in Kotlin and will be able to build robust applications skillfully.
Table of Contents (21 chapters)
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Section 1: Fundamental Concepts in Kotlin
5
Section 2: Practical Concepts in Kotlin
15
Section 3: Advanced Concepts in Kotlin

Exception handling

Handling of exceptions is almost identical to the way Java handles exceptions with one key difference-in Kotlin all exceptions are unchecked.

As a reminder, checked exceptions are those that must be declared as part of the method signature or handled inside the method. A typical example would be IOException, which is thrown by many File functions, and so ends up being declared in many places throughout the IO libraries.

Unchecked exceptions are those that do not need to be added to method signatures. A common example would be the all too familiar NullPointerException, which can be thrown anywhere. If this was a checked exception, literally every function would need to declare it!

In Kotlin, since all exceptions are unchecked, they never form part of function signatures.

The handling of an exception is identical to Java, with the use of try, catch, and finally...

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Learn Kotlin Programming
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