This discussion is a kind of auto-promotion . You’ll find the links of past talks.
Human Talks - Geneva [FR]
Our first talk about Kotlin, in 2013, with a live demo of a Kotlin Spring application.
At that time, annotation didn’t have ‘@’.
MiXit - Lyon [FR]
2017 Kotlin from the trenches
Really bad talk
Live code with git branch switching, too complicated, at the end I’m so tired that I can hardly pronounce a phrase.
2018 Porting D3.js to Kotlin multiplatform
KNight Kyiv 2018: Multiplatform development with Kotlin