how do we spoof a primitive int into a `val foo:(I...

# compiler

[jimn]

how do we spoof a primitive int into a val foo:(Int)->Int in kotlin-jvm to squash boxing?

[ephemient]

Function ((T) -> R) is generic, so the interface will always box

[jimn]

right, so we have to build a java shim and send a SAM through in order to guarantee we start with an int?

[ephemient]

no need to build one; if you use java.util.function.IntUnaryOperator then it'll be primitive Int

[jimn]

java doesn't autobox if you start with a primitive.

[jimn]

if the passed val is inside a java host, presumably tht's enough.