Why the former works with the type inference when the latter doesn’t?

# android

[leosan]

Why the former works with the type inference when the latter doesn’t?

[shubh10]

T is expected to be of type Any and your passing Any?. Generally Any? is the base class for everything in kotlin.

[leosan]

but why the same method outside the extension works without complaining about type?

[Dico]

The problem is that you get a union type. If it succeeds, you get T, else, you get NetworkErrorHandler.

[Dico]

Which is represented as Any.

[Dico]

Or you get a union with Unit.

[Dico]

Instead of recover, consider using onFailure

[Dico]

Is this a library class? You're normally not able to return Result.

[sitepodmatt]

You can fix this by having NetworkErrorHandler return "Nothing" I believe

[sitepodmatt]

image.png

[sitepodmatt]

notice how s is <String> and s2 is <any> the Nothing signals to the compiler it will throw

[leosan]

Oh got it now, thanks guys!