I'd like to reference a partially-applied function...

# functional

[Ulrich Schuster]

I'd like to reference a partially-applied function with receiver. Is this possible?

Say, I have a function f(x: X, (X) -> Y): Y that takes some argument x: X and a function (X) -> Y . And I have a concrete function with receiver, say Int.makeY(x: X): Y . I would like to partially apply makeY to a given receiver and pass it to f, like

val foo = 5
f(x) { foo::makeY }

However, this results in an ArgumentTypeMismatch compilation error, stating that Y was expected instead of the provided function reference. Am I simply making a mistake in my declaration, or is it simply not possible to pass a partially applied function with receiver as reference?

[Emil Kantis]

I think you’re currently passing () -> (X) -> Y by passing the reference inside a lambda. Does it work with f(x, foo::makeY)?

[Ulrich Schuster]

that's the solution, thanks a lot!