anyone who would know, why following code fails because of type inference ?

# announcements

[Jiri Bruchanov]

anyone who would know, why following code fails because of type inference ?

[Jiri Bruchanov]

private val working = listOf<Pair<String, (View) -> Unit>>(
        "FOCUS_DOWN" to { it -> it.requestFocus(View.FOCUS_DOWN) }
)

Type inference failed. Expected type mismatch: inferred type is Pair<String, () -> [ERROR : <ERROR FUNCTION RETURN TYPE>]> but Pair<String, (View) -> Unit> was expected

private val failing = listOf<Pair<String, (View) -> Unit>>(
    "FOCUS_DOWN" to { it.requestFocus(View.FOCUS_DOWN) }
)

[Jiri Bruchanov]

//following is fine
"FOCUS_DOWN" to { it -> it.requestFocus(View.FOCUS_DOWN)

//this one fails
"FOCUS_DOWN" to { it.requestFocus(View.FOCUS_DOWN) }

[Shawn]

works for me actually, wonder if this is just an intellij bug

[Jiri Bruchanov]

maybe kotlin compiler issue ?
I have

1.3.71

[Shawn]

also using 1.3.71

[Jiri Bruchanov]

hm, working in scratches, but not in android project

[Shawn]

bizarre

[Zach Klippenstein (he/him) [MOD]]

Do you have New Type Inference enabled in the IDE?

[Shawn]

I don’t think so

[Jiri Bruchanov]

@Zach Klippenstein (he/him) [MOD] don't think so, how can I confirm that ?

[Jiri Bruchanov]

doesn't seem to be related to IDE...
just compiling it via gradle fails with same error

[Zach Klippenstein (he/him) [MOD]]

Open settings, search for Kotlin Compiler settings, there should be a checkbox to enable new type inference. But yea sounds like that's irrelevant, nvm.