Hello all :wave: I don't want to spark a big discu...

# announcements

[Jordy Langen]

Hello all 👋 I don't want to spark a big discussion, and hopefully this is the right channel but I was wondering what the state of expression trees in Kotlin is. I see some messages stating that it's planned but I don't seen anything other than that. Anyone here has any idea?

[poohbar]

What is an expression tree?

[Jordy Langen]

This is what I'm referring too: https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/expression-trees/

[Andreas Sinz]

What are those expression trees good for?

[poohbar]

seems pretty much like a tool to create DSLs and Kotlin already has extensive capabilities in that area

[Jordy Langen]

It's not for DSLs or anything. In C# you would use it to convert lambda statements into SQL queries (or any other query language for that matter)

[Jordy Langen]

So instead of queryable.where("age").eq(10) you would have queryable.where(person => person.age == 10)

[gildor]

Andrey Breslav mentioned expression trees in Kotlin on one of conference, but as I know there is no proposal or ETA

[Jordy Langen]

Thanks for info! Too bad there is no official statement