kotlin doesn't have them. But it's commonly used ...

# announcements

[mpcjanssen]

kotlin doesn't have them. But it's commonly used in for example haskell. They won't work for situations with unlimited different types though.

[mpcjanssen]

What are you trying to do?

[mpcjanssen]

Maybe making your library act on interfaces and providing extension functions to convert to and from this interface works better

[mpcjanssen]

Sorry on mobile