Can't function references specify type parameters?

# announcements

[raulraja]

Can't function references specify type parameters?

[diesieben07]

If I understand you correctly, no. Please clarify what exactly you mean though.

[alexcouch]

So like java lambdas? Where you have a method reference and you don't call the parameters because the runtime fills in the parameters for you? lambdaCall(LambdaClass::methodReference) like that. Cause really, this works because the runtimes fills in the correct arguments based on the method/function the method is being referenced from (right?) so ideally in kotlin, I would assume that a function reference is the same thing since kotlin uses the terms "function" and "member functions" so when I hear "function references" I think of method references in java. Which I would assume the answer to be no, but I could be wrong

[raulraja]

::myfunc<A>

[raulraja]

Say I have a function with a type like this:

inline fun <reified A> myfunc(): String = 
   A::class.java.simpleName

[raulraja]

how do you lift that to a method reference since the type args can't be inferred from the function arguments?

[raulraja]

Works:

fun myfunc2(): String = ""
val y = ::myfunc2

Does not work:

inline fun <reified A> myfunc(): String =
        A::class.java.simpleName
val x = ::myfunc<Int>

[diesieben07]

You cannot. You can't inline into a method reference as far as I know. You need to use a normal lambda

[raulraja]

ok, same issue when not inline though

[diesieben07]

Yes, you can't specify the type parameter like that, you need a lambda

[raulraja]

👍