is anyone able to help me understand this question I posted kotlinlang #announcements

is anyone able to help me understand this question...

burg

04/02/2018, 11:55 PM

➕ 1

sandeep

04/03/2018, 6:03 AM

Assuming I understood the problem correctly, I think this is because KClass is defined as KClass<T : Any> and

Any

is inherited from

Any?

(?) at least as per the diagram below

sandeep

04/03/2018, 6:03 AM

ref:

http://natpryce.com/articles/000818/entire-hierarchy.png▾

sandeep

04/03/2018, 6:04 AM

sandeep

04/03/2018, 6:06 AM

I mean, with that diagram, it makes sense why

test2<String?>()

doesn’t work (as T is bounded by Any)

sandeep

04/03/2018, 6:07 AM

and the reason why

inline fun <reified T> test3(): KClass<T> = T::class // does not compile

doesn’t compile is since T is unbounded but the T of KClass is bounded by

Any

sandeep

04/03/2018, 6:09 AM

okay, just re-read your question on stack overflow. Your question was “why” and how to get it working. sorry, mis-read your question.

sandeep

04/03/2018, 6:11 AM

looks like a bug (or rather a limitation)

burg

04/03/2018, 3:48 PM

Yeah ultimately I am trying to have

String?::class

actually return the same as

String::class

(and it does, at some level, if you look at how test1 works in my example).

burg

04/03/2018, 3:49 PM

It does seem like an oversight, the bound itself is not really used, nor is it enforced in some cases.

louiscad

04/04/2018, 5:52 AM

null doesn't have a class