MICRO-COURSE

Kotlin Language Fundamentals

Kotlin Language Fundamentals: 14 short lessons, one for each concept. Val and var, null safety, data classes, classes and objects, extension functions, higher-order functions and lambdas, collections, sealed classes, when expressions, coroutines, flow, scope functions, Java interoperability, and Gradle Kotlin DSL.

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01 / WATCH

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02 / UNDERSTAND

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Val and var, null safety, data classes, classes and objects, extension functions, higher-order functions and lambdas, collections, sealed classes, when expressions, coroutines, flow, scope functions, Java interoperability, and Gradle Kotlin DSL.

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Concept scope

03 / TRY IT

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Write down a small example, its inputs or starting point, and the result you expect.
Explain your reasoning and note what you would like reviewed in a live or 1:1 session.

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A short example, reasoning and an open question

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Explain the concept in your own words and identify where it fits in the subject.
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Record one limitation or edge case and a question to discuss with a mentor.

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14 results1–12

Lesson

val and var

A short lesson on val and var from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Null safety

A short lesson on null safety from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Data classes

A short lesson on data classes from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Classes and objects

A short lesson on classes and objects from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Extension functions

A short lesson on extension functions from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Higher-order functions and lambdas

A short lesson on higher-order functions and lambdas from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Collections

A short lesson on collections from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Sealed classes

A short lesson on sealed classes from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

When expressions

A short lesson on when expressions from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Coroutines

A short lesson on coroutines from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Flow

A short lesson on flow from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Lesson

Scope functions

A short lesson on scope functions from the Kotlin Language Fundamentals micro course: what it is, where it shows up in real systems, and a practical example you can apply.

Open lesson

Kotlin Language Fundamentals

Recorded video

Start with the topic guide.

Concept scope

Prepare a focused example

Check your understanding

Need a walkthrough?Stay with this topic.

Request a live session for this topic.

Explore 14 focused topics.

val and var

Null safety

Data classes

Classes and objects

Extension functions

Higher-order functions and lambdas

Collections

Sealed classes

When expressions

Coroutines

Flow

Scope functions

Need a walkthrough?
Stay with this topic.