For example, how can I use System.Console.WriteLine
from clojure-clr? In general, what's the rule for exporting/importing functions/classes from other languages such as C#/F# from/to Clojure-clr?
System.Console is loaded by default. You can simply use:
(System.Console/WriteLine "Hello World!")
Another example, using a static class:
(import (System.IO Path))
(println (Path/GetFullPath "."))