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Advanced Kotlin

Advanced Kotlin

Marcin Moskała

Do you know how to use Kotlin and its advanced features, which could enhance your efficiency? What are the consequences or limitations of commonly used advanced features? If your answer is "I'm not sure" or "I don't know," then this course is for you.

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About

About

About the Course

This course focuses on the advanced aspects of Kotlin's development, including generic variance modifiers, delegation, multiplatform programming, annotation processing, KSP, and compiler plugins.

These are often features and tools that developers use daily, even though they don’t know exactly how they work. This course explains them and gives you the knowledge to use these features in your projects.

Price

Course Price

Minimum price

$19.00

$29.00

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$29.00

Author earns

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Instructor

About the Instructor

Marcin Moskała

Marcin Moskala is an experienced developer and Kotlin trainer. He is the founder of the kt.academy, Kotlin GDE, an official JetBrains partner for teaching Kotlin, and author of the books Effective Kotlin, Kotlin Coroutines, and Android Development with Kotlin.

Leanpub Podcast

Episode 254

An Interview with Marcin Moskała

Material

Course Material

  • Notes about the course

  • Project with exercises

  • Quiz 1

    3 attempts allowed

  • Generic variance modifiers

  • List variance

  • Consumer variance

  • Function types

  • Quiz 2

    3 attempts allowed

  • Exercise: Usage of generic types

  • Quiz 3

    100 attempts allowed

  • The Covariant Nothing Object

  • The Covariant Nothing Object

  • The Covariant Nothing Class

  • Quiz 4

    3 attempts allowed

  • Variance modifier limitations

  • Variance modifier limitations

  • UnsafeVariance annotation

  • Variance modifier positions

  • Star projection

  • Summary

  • Quiz 5

    3 attempts allowed

  • Exercise: Generic Response

  • Quiz 6

    100 attempts allowed

  • Exercise: Generic Consumer

  • Quiz 7

    100 attempts allowed

  • Interface delegation

  • The delegation pattern

  • Delegation and inheritance

  • Kotlin interface delegation support

  • Wrapper classes

  • The decorator pattern

  • Intersection types

  • Limitations

  • Conflicting elements from parents

  • Summary

  • Quiz 8

    3 attempts allowed

  • Exercise: ApplicationScope

  • Quiz 9

    100 attempts allowed

  • Property delegation

  • How property delegation works

  • Other getValue and setValue parameters

  • Implementing a custom property delegate

  • Provide a delegate

  • Property delegates in Kotlin stdlib

  • The notNull delegate

  • Quiz 10

    3 attempts allowed

  • Exercise: Lateinit delegate

  • Quiz 11

    100 attempts allowed

  • The lazy delegate

  • The lazy delegate

  • Quiz 12

    3 attempts allowed

  • Exercise: Blog Post Properties

  • Quiz 13

    100 attempts allowed

  • The observable delegate

  • The observable delegate

  • The vetoable delegate

  • Quiz 14

    3 attempts allowed

  • A map as a delegate

  • A map as a delegate

  • Review of how variables work

  • Summary

  • Quiz 15

    3 attempts allowed

  • Exercise: Mutable lazy delegate

  • Quiz 16

    100 attempts allowed

  • Kotlin Contracts

  • The meaning of a contract

  • How many times do we invoke a function from an argument?

  • Implications of the fact that a function has returned a value

  • Using contracts in practice

  • Summary

  • Quiz 17

    3 attempts allowed

  • Exercise: Coroutine time measurement

  • Quiz 18

    100 attempts allowed

  • Part 2: Kotlin on different platforms

  • Java interoperability

  • Nullable types

  • Kotlin type mapping

  • JVM primitives

  • Collection types

  • Quiz 19

    3 attempts allowed

  • Annotation targets

  • Annotation targets

  • Static elements

  • JvmField

  • Using Java accessors in Kotlin

  • Quiz 20

    3 attempts allowed

  • JvmName

  • JvmName

  • JvmMultifileClass

  • JvmOverloads

  • Quiz 21

    3 attempts allowed

  • Unit

  • Unit

  • Function types and function interfaces

  • Tricky names

  • Throws

  • JvmRecord

  • Summary

  • Quiz 22

    3 attempts allowed

  • Exercise: Adjust Kotlin for Java usage

  • Quiz 23

    100 attempts allowed

  • Using Kotlin Multiplatform

  • Multiplatform module configuration

  • Expect and actual elements

  • Possibilities

  • Quiz 24

    3 attempts allowed

  • Multiplatform libraries

  • Multiplatform libraries

  • Quiz 25

    3 attempts allowed

  • A multiplatform mobile application

  • A multiplatform mobile application

  • ViewModel class

  • Platform-specific classes

  • Observing properties

  • Summary

  • Quiz 26

    3 attempts allowed

  • Exercise: Multiplatform LocalDateTime

  • Quiz 27

    100 attempts allowed

  • JavaScript interoperability

  • Setting up a project

  • Using libraries available for Kotlin/JS

  • Using Kotlin/JS

  • Building and linking a package

  • Distributing a package to npm

  • Exposing objects

  • Exposing Flow and StateFlow

  • Adding npm dependencies

  • Frameworks and libraries for Kotlin/JS

  • JavaScript and Kotlin/JS limitations

  • Summary

  • Quiz 28

    3 attempts allowed

  • Exercise: Migrating a Kotlin/JVM project to KMP

  • Quiz 29

    100 attempts allowed

  • Part 3: Metaprogramming

  • Reflection

  • Hierarchy of classes

  • Function references

  • Parameter references

  • Property references

  • Quiz 30

    3 attempts allowed

  • Class reference

  • Class reference

  • Serialization example

  • Quiz 31

    3 attempts allowed

  • Referencing types

  • Referencing types

  • Type reflection example: Random value

  • Kotlin and Java reflection

  • Breaking encapsulation

  • Summary

  • Quiz 32

    3 attempts allowed

  • Exercise: Function caller

  • Quiz 33

    100 attempts allowed

  • Exercise: Object serialization to JSON

  • Quiz 34

    100 attempts allowed

  • Exercise: Object serialization to XML

  • Quiz 35

    100 attempts allowed

  • Exercise: DSL-based dependency injection library

  • Quiz 36

    100 attempts allowed

  • Annotation processing

  • Your first annotation processor

  • Hiding generated classes

  • Summary

  • Quiz 37

    3 attempts allowed

  • Exercise: Annotation Processing execution measurement wrapper

  • Quiz 38

    100 attempts allowed

  • Kotlin Symbol Processing

  • Your first KSP processor

  • Testing KSP

  • Dependencies and incremental processing

  • Multiple rounds processing

  • Using KSP on multiplatform projects

  • Summary

  • Quiz 39

    3 attempts allowed

  • Exercise: KSP execution measurement wrapper

  • Quiz 40

    100 attempts allowed

  • Kotlin Compiler Plugins

  • Compiler frontend and backend

  • Compiler extensions

  • Popular compiler plugins

  • Making all classes open

  • Changing a type

  • Generate function wrappers

  • Example plugin implementations

  • Summary

  • Quiz 41

    3 attempts allowed

  • Static Code Analysers

  • What are Static Analysers?

  • Types of analysers

  • Formatters

  • Code Quality Analysers

  • Data-Flow Analysers

  • Code Manipulation

  • Embedded vs Standalone

  • Kotlin Code Analysers

  • Kotlin Compiler

  • IntelliJ IDEA

  • ktlint

  • ktfmt

  • Android Lint

  • detekt

  • Setting up detekt

  • detekt Rules and Rulesets

  • Configuring detekt

  • Incremental Adoption

  • Writing your first detekt Rule

  • Setting up your rule project

  • Coding your rule

  • Using your rule

  • Rules with type resolution

  • Conclusion

  • Quiz 42

    3 attempts allowed

  • Exercise solutions

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