When I have a function that expects a value of typ...

# compiler

[Sam]

When I have a function that expects a value of type (A) -> B, it’d be cool to be able to just pass ::foo instead of A::foo. Is there a name for what I want? Even better, is there an existing ticket/proposal for it?
Example:

data class A(val name: String)
fun <B> A.getProp(prop: (A) -> B) = prop(this)
fun A.getName() = getProp(::name) // I want this
fun A.getName2() = getProp(A::name) // But I have to do this instead

[Sam]

The context where this bugs me is in tests using assertk, where I end up with things like:

assertThat(actual)
    .isInstanceOf(ExpectedClass::class).all {
        prop(ExpectedClass::a).isEqualTo(expectedA)
        prop(ExpectedClass::b).isEqualTo(expectedB)
    }

[Sam]

I end up repeating the ExpectedClass over and over again

[Sam]

But I keep doing it because it is useful to use the property reference rather than a lambda (like prop { it. a }), so that when the assertion fails it will include the name of the property

[Chrimaeon]

Better post in #language-proposals

[Sam]

👍 thanks for the suggestion, will do!