A modern programming language that makes developers happier.

kotlinlang

<@U16CM33AB> any idea why that kind thing happens?
```
java.lang.ClassCastException: krangl.SimpleDataFrame cannot be cast to krangl.DataFrame
```

That's indeed rahter odd. SimpelDataFrame is a subclass of DataFrame. Could you provide a more complete example as a github ticket. I'll have a look then

well i think i figured it out, nothing related to krangl,
i am using kotlin-scripting and i was using the jar to load the library, every single evaluation, it seems like as far as the jvm is concerned those are different classes then

btw this where we are atm: <https://i.imgur.com/o1yfHwn.png>
the GUI still needs much work