The essence of how generics work in Kotlin.

Generics in Kotlin

All you need to know about Static Code Analysers and Detekt.

Static Code Analysers

Implement your first annotation processor in Kotlin.

Annotation Processing

Using non-standard collection types to improve performance in Kotlin.

Effective Kotlin Item 60: Use appropriate collection types

All the essential aspects of KSP in practice.

Kotlin Symbol Processing

Why we should use caching and how to do it.

Effective Kotlin Item 49: Use caching when possible

What are data classes in Kotlin and how do we use them.

Data classes in Kotlin

Why we should use object declarations instead of regular classes.

Effective Kotlin Item 48: Consider using object declarations

Using type references, with practical example of random value generator.

Kotlin Reflection: Type references

All the essential aspects of class references, and a practical object serialization example.

Kotlin Reflection: Class references

The general hierarchy of Kotlin reference classes, and details about method and property references.

Kotlin Reflection: Method and property references

What are extensions in Kotlin and how do we use them.

Extensions in Kotlin

What is dependency injection, why it is so important, and how to use it in Kotlin.

Effective Kotlin Item 35: Consider using dependency injection

How in Kotlin we can implement Android and iOS projects with shared logic.

Implementing Multiplatform Kotlin Mobile

How in Kotlin we can use multiplatform capabilities to distribute the same code to multiple platforms.

Implementing Multiplatform Kotlin library

The essence of using multiplatform Kotlin capabilities and definition common elements.

Using Multiplatform Kotlin

What are sealed classes and interfaces in Kotlin and how do we use them.

Sealed classes and interfaces in Kotlin

Learn why do we need to synchronize access to mutable state, and how to secure it.

Effective Kotlin Item 2: Eliminate critical sections

The parts of Kotlin and Java interoperability that might be surprising or counterintuitive.

Kotlin and Java interoperability: Traps and gotchas

Learn about useful Kotlin annotations, that decide that it is compiled to on JVM.

Kotlin and Java interoperability: Useful annotations

Kotlin property is Java getter, setter, field and possibly more. So what to do, when you need to annotate or use a specific JVM element?

Kotlin and Java interoperability: Properties and annotations

See surprising transitions that happens on types when you interoperate between Kotlin and Java.

Kotlin and Java interoperability: Types

What is object expression, object declaration and companion objects, and how we use them.

Objects in Kotlin

Practical review of Kotlin Contracts - a feature we often use, without knowing about it.

Kotlin Contracts

How type system makes Kotlin so flexible, safe, and intuitive.

The beauty of Kotlin type system

How do we use Map as a property delegate, and why the result of a famous puzzler should not be surprising.

Map as a property delegate

What are observable and vetoable delegates, and what are their real-life use cases.

Observable and Vetoable delegates

What is lazy delegate, and what are its real-life use cases.

Lazy property delegate

What is property delegation, how does it work, and how can we implement our custom property delegate.

Property delegation

How Kotlin null-safety works, and how can we deal with nullable values.

Nullability in Kotlin

One of the least known Kotlin features, that can be sometimes found really useful.

Interface Delegation

Learn about the basic Kotlin values, types and operations.

Basic values in Kotlin

What limitations generic variance modifiers introduce, and how can we ignore them.

Variance modifiers limitations

The pattern we are all using, but no-one talks about it.

Covariant Nothing Object

What are out and in, and how do we use them without even knowing.

Kotlin Generic Variance Modifiers

What are enum classes in Kotlin and how do we use them.

Enum classes in Kotlin

How are operators defined for types in Kotlin, and how can we define our own operators.

Operator overloading in Kotlin

Learn about the amazing capabilities of Kotlin for-loop.

The power of Kotlin for-loop

How to write your first program, how can we use it in real-life projects, and how to explore what Kotlin is compiled to.

Your first program in Kotlin

Learn about what functions can offer us in Kotlin.

Matthias Schenk

Reviewed articles