"Problem Solving Examples in RxJava" not written in Java

[nimiwio]

The examples in the "Problem Solving Examples in RxJava" section of the wiki do not seem to be written in Java.

https://github.com/ReactiveX/RxJava/wiki/Problem-Solving-Examples-in-RxJava

[akarnokd]

Indeed, many of the wiki pages remained from the early days where this repo was poliglot. You are welcome to turn them into Java (8) examples.

[hoangnam2261]

Hello hello, can i take care this?

[akarnokd]

@hoangnam2261 Sure!

[akarnokd]

Closing via #6324