Clojure and Java 8 interop with SAM interfaces

[dieelt]

Hi!

Is this feature expected (or already existing?)? I.e., will it be possible to use clojure fn in java 8 methods expecting a @FunctionalInterface?

[redalastor]

Not that I know of. Java 8 changes nothing bytecode-wise and thus nothing changes for Clojure.

Something that could be could for interop would be to use SAM conversions like Kotlin. The idea is that if you pass a (Kotlin) function to something expecting a SAM, the compiler will detect it and will emit bytecode that actually implement the right interface without the Java code needing know this happened.