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zsmb.co
zsmb13
Creating a Kotlin
Course from Scratch
Márton Braun
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No content
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› Budapest, Hungary
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› Budapest, Hungary
› BME (Budapest University of Technology and Economics)
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› Budapest, Hungary
› BME (Budapest University of Technology and Economics)
› VIK (Faculty of Electrical Engineering and Informatics)
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› Budapest, Hungary
› BME (Budapest University of Technology and Economics)
› VIK (Faculty of Electrical Engineering and Informatics)
› AUT (Department of Automation and Applied Informatics)
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Android & iOS courses (elective)
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Android & iOS courses (elective)
Android development book
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Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
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Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
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Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
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2013
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2018
2019
2020
2021
2012
2022
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Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
Android course (as a student)
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2013
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2015
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2018
2019
2020
2021
2012
2022
2010
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Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
Android course (as a student)
Learning Kotlin
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2013
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2018
2019
2020
2021
2012
2022
2010
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Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
Android course (as a student)
Learning Kotlin
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2013
2014
2015
2016
2017
2018
2019
2020
2021
2012
2022
2010
2011
Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
Android course (as a student)
Learning Kotlin
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2013
2014
2015
2016
2017
2018
2019
2020
2021
2012
2022
2010
2011
Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
Android course (as a student)
Learning Kotlin
Converting the Android course to Kotlin
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2013
2014
2015
2016
2017
2018
2019
2020
2021
2012
2022
2010
2011
Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
Android course (as a student)
Learning Kotlin
Converting the Android course to Kotlin
Creating a Kotlin Course from Scratch
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2013
2014
2015
2016
2017
2018
2019
2020
2021
2012
2022
2010
2011
Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Mobile and Web Development course (BSc)
Android course (as a student)
Learning Kotlin
Converting the Android course to Kotlin
Creating a Kotlin Course from Scratch Kotlin course (elective)
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2013
2014
2015
2016
2017
2018
2019
2020
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2012
2022
2010
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Android & iOS courses (elective)
Android development book
Mobile Software Development minor (MSc)
Flutter course (elective)
Mobile and Web Development course (BSc)
Android course (as a student)
Learning Kotlin
Converting the Android course to Kotlin
Creating a Kotlin Course from Scratch Kotlin course (elective)
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Acknowledgements
Bertalan
Forstner
Péter
Ekler
Hassan
Charaf
Imre
Kelényi
Gergely
Csúcs
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Goals
› Teach independently of Android
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Goals
› Teach independently of Android
› Build an interest in Kotlin
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Goals
› Teach independently of Android
› Build an interest in Kotlin
› Deep understanding of language basics
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Goals
› Teach independently of Android
› Build an interest in Kotlin
› Deep understanding of language basics
› Building on Java and OO knowledge
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Student language stats
3%
4%
4%
10%
11%
25%
32%
37%
61%
72%
77%
87%
0% 20% 40% 60% 80% 100%
Dart
pascal
Swift
PHP
TypeScript
Kotlin
JavaScript
Python
C#
C
C++
Java
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Materials
› Full written material in English
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Materials
› Full written material in English
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Materials
› Full written material in English
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Materials
› Full written material in English
› Many links, lots of code
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Materials
› Full written material in English
› Many links, lots of code
› Some original illustrations
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All on GitHub
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All on GitHub
István
Juhos
stewemetal
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Lectures
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Lectures
› 0 slides
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Lectures
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› All live coding
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Lectures
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› All live coding
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Live coding
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Live coding
› The IDE is a core part of the Kotlin experience
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Live coding
› The IDE is a core part of the Kotlin experience
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Live coding
› The IDE is a core part of the Kotlin experience
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Live coding
› The IDE is a core part of the Kotlin experience – and it’s free!
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Live coding
› The IDE is a core part of
the Kotlin experience
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Live coding
› The IDE is a core part of
the Kotlin experience
› Great for encouraging
questions
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Useful IDE functionality
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Useful IDE functionality
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Useful IDE functionality
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Useful IDE functionality
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Useful IDE functionality
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Useful IDE functionality
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Useful IDE functionality
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Useful IDE functionality
› Java to Kotlin converter
› Kotlin scripts
› Scratch files
› REPL
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Lectures
› Usual setup
› In-person lectures
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Lectures
› Usual setup
› In-person lectures
› Extras outside of the core
material
› Events
› Language news
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Lectures
› Usual setup
› In-person lectures
› Extras outside of the core
material
› Events
› Language news
› Easy interaction
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Remote
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Remote
› Recordings are essential
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Remote
› Recordings are essential
› Started these in person already
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Remote
› Recordings are essential
› Started these in person already
› Making them available very quickly
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Remote
› Recordings are essential
› Started these in person already
› Making them available very quickly
› Available in multiple forms
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Remote
› Recordings are essential
› Started these in person already
› Making them available very quickly
› Available in multiple forms
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Remote
› Recordings are essential
› Started these in person already
› Making them available very quickly
› Available in multiple forms
› Zoom classes
› Harder to get interaction
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Remote
› Recordings are essential
› Started these in person already
› Making them available very quickly
› Available in multiple forms
› Zoom classes
› Harder to get interaction
› Clear communication of important info
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Remote
› Recordings are essential
› Started these in person already
› Making them available very quickly
› Available in multiple forms
› Zoom classes
› Harder to get interaction
› Clear communication of important info
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Requirements
Homework Test
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Homework
› Free choice of project
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Homework
› Free choice of project
› … as long as it’s not Android
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Homework
› Free choice of project
› … as long as it’s not Android
› Varying difficulty
› Create something meaningful
› Write neat Kotlin code
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Homework
› Starter projects
› Command line, JDK8
› JavaFX JDK8
› TornadoFX
› JavaFX JDK11
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Homework
› Starter projects
› Command line, JDK8
› JavaFX JDK8
› TornadoFX
› JavaFX JDK11
› Largest setup problems
› JDK versions
› Missing JavaFX support
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Homework
› Starter projects
› Command line, JDK8
› JavaFX JDK8
› TornadoFX
› JavaFX JDK11
› Largest setup problems
› JDK versions
› Missing JavaFX support
› No problems installing IntelliJ IDEA
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Homework examples
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Homework examples
› Basic Kotlin classes with operators, unit tests, conventions
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Homework examples
› Basic Kotlin classes with operators, unit tests, conventions
› REST services
› Ktor/Exposed stack
› Spring Boot apps
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Homework examples
› Basic Kotlin classes with operators, unit tests, conventions
› REST services
› Ktor/Exposed stack
› Spring Boot apps
› JavaFX / TornadoFX games
› Minesweeper, Tetris, Game of Life
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Homework examples
› Basic Kotlin classes with operators, unit tests, conventions
› REST services
› Ktor/Exposed stack
› Spring Boot apps
› JavaFX / TornadoFX games
› Minesweeper, Tetris, Game of Life
› Integrations with video games
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Homework examples
› Basic Kotlin classes with operators, unit tests, conventions
› REST services
› Ktor/Exposed stack
› Spring Boot apps
› JavaFX / TornadoFX games
› Minesweeper, Tetris, Game of Life
› Integrations with video games
› Image processing
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Homework examples
› Basic Kotlin classes with operators, unit tests, conventions
› REST services
› Ktor/Exposed stack
› Spring Boot apps
› JavaFX / TornadoFX games
› Minesweeper, Tetris, Game of Life
› Integrations with video games
› Image processing
› Data analysis
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Testing
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Testing
› Not super hard
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Testing
› Not super hard
› Lots of quiz type questions
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Testing
› Not super hard
› Lots of quiz type questions
› Open ended questions
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Testing
› Not super hard
› Lots of quiz type questions
› Open ended questions
› Some coding questions
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Testing
› Not super hard
› Lots of quiz type questions
› Open ended questions
› Some coding questions
› “Rewrite this by using apply”
val square = Square()
square.x = 10
square.y = 20
square.side = 50
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Testing
› Analyzing broken code
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Testing
› Analyzing broken code
› “Someone wrote this code without sufficiently learning Kotlin.
Mark and fix as many mistakes as you can!”
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Testing
› Analyzing broken code
› “Someone wrote this code without sufficiently learning Kotlin.
Mark and fix as many mistakes as you can!”
class Car(val year = 2000) {
val model: String;
}
void drive(car: Car?) {
println("Driving around in a $car.year $car.model")
}
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Stats
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Students Survey responses
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External resources used
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External resources used
› kotlinlang.org
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External resources used
› kotlinlang.org
› Ktor, TornadoFX, Spring docs
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External resources used
› kotlinlang.org
› Ktor, TornadoFX, Spring docs
› StackOverflow
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External resources used
› kotlinlang.org
› Ktor, TornadoFX, Spring docs
› StackOverflow
› YouTube tutorials
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External resources used
› kotlinlang.org
› Ktor, TornadoFX, Spring docs
› StackOverflow
› YouTube tutorials
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External resources used
› hyperskill.org
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External resources used
› play.kotlinlang.org
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More to consider
› play.kotlinlang.org
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More to consider
› play.kotlinlang.org
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More to consider
› play.kotlinlang.org
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More to consider
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Favourites
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Favourites
› Showing everything through examples
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Favourites
› Showing everything through examples
› Homework assignment
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Favourites
› Showing everything through examples
› Homework assignment
› GitHub repo materials
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Favourites
› Showing everything through examples
› Homework assignment
› GitHub repo materials
› Functional programming
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Favourites
› Showing everything through examples
› Homework assignment
› GitHub repo materials
› Functional programming
› Coroutines
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Favourites
› Showing everything through examples
› Homework assignment
› GitHub repo materials
› Functional programming
› Coroutines
› Looking at Java bytecode
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Favourites
› Showing everything through examples
› Homework assignment
› GitHub repo materials
› Functional programming
› Coroutines
› Looking at Java bytecode
› Nyan progress bar
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Favourites
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Feedback
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Feedback
“Never seen live coding like this in a course before”
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Feedback
“Never seen live coding like this in a course before”
“The most useful elective course I’ve had so far”
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Feedback
“Never seen live coding like this in a course before”
“The most useful elective course I’ve had so far”
“Finally understood lambdas after seeing it elsewhere before”
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Feedback
“Never seen live coding like this in a course before”
“The most useful elective course I’ve had so far”
“Finally understood lambdas after seeing it elsewhere before”
“Didn’t just learn the language, but also the design decisions
behind it, and the IDE’s capabilities”
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Feedback
“Never seen live coding like this in a course before”
“The most useful elective course I’ve had so far”
“Finally understood lambdas after seeing it elsewhere before”
“Didn’t just learn the language, but also the design decisions
behind it, and the IDE’s capabilities”
“Would love a 4 credit subject with labs each week”
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Feedback
“I’m an electrical engineer in the 4th semester, realized I
want to code for a living instead, this course reenforced
that decision.”
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Feedback
“I’m an electrical engineer in the 4th semester, realized I
want to code for a living instead, this course reenforced
that decision.”
“Was looking for copper but found gold. I wanted to take a
2 credit filler course for my last semester, but this turned
out to be really useful.”
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Overall subject rating: 9.63
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› Meet students where they are
› Live lectures or recordings
› Written material
› Projects to follow along with
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› Meet students where they are
› Live lectures or recordings
› Written material
› Projects to follow along with
› Teach more than syntax
› Explain the “why”
› Show underlying details
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› Meet students where they are
› Live lectures or recordings
› Written material
› Projects to follow along with
› Teach more than syntax
› Explain the “why”
› Show underlying details
› Put students first
› Clear communication, open for feedback
› Involve them in the lectures
› No super hard requirements
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Everything’s a remix
› Android-based Software Development
(VIAUAV21)
› C11 and C++11 Programming
(VIEEAV01)
› Server Side JavaScript
(VITMAV42)
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Kotlin @ BME
› Android software development (4)
› Kotlin software development (2)
› Mobile & web development
› 400+, all BSc students
› Mobile Software Development minor (MSc)
› Mobile Software Platforms (4)
› Mobile Software System Development (4)
› Mobile Software Laboratory (4)
› 3D Graphics
› KotlinJS for WebGL
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zsmb13
zsmb.co/talks
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zsmb.co/talks
zsmb13
Márton Braun › Meet students where they are
› Teach more than syntax
› Put students first
Creating a Kotlin
Course from Scratch