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kotlinlang

Hi, i'm trying to emulate the Reactive Code from <https://egghead.io/instructors/andre-staltz|André Staltz> Tutorial, which is in Java script
<https://embed.plnkr.co/github/eggheadio-projects/introduction-to-reactive-programming/02-rxjs-use-an-event-stream-of-double-clicks-in-rxjs?show=lib%2Fscript.js,preview|https://embed.plnkr.co/github/eggheadio-projects/introduction-to-reactive-programmin[…]-stream-of-double-clicks-in-rxjs?show=lib%2Fscript.js,preview>

To kotlin, i'm fairly new to kotlin when it comes to reactive part, do i have to use rxKotlin for this or kotlin already has this built in with the kotlin flow ?