hi, how to create an empty generic array in Kotlin?

var items: Array<T> = ?

I wanted to use

arrayOf<T>()

but this doesn't work.

@Erfan You need to tell the compiler what

T

is

how do I do it? It's not known at compile time.

then use

Any

var items: Array<T> = emptyArray()

it responds with

Type mismatch

when I try to do :

var items: Array<T> = arrayOf<Any>()

you cannot use an undefined

T

in your code, you need to use

Array<Any> = arrayOf()

Cant you just cast it ?

Array is invariant, so no

more complete code of the situation is this:

class PaginationManager<T>(var items: Array<T>,
                           var totalCount: Int,
                           val pageSize: Int,
                           var pageNumber: Int,
                           var status: PaginationStatus = PaginationStatus.WaitingForNextPageTrigger,
                           private val fetchClosure: PaginationFetchClosure<T>)

I just wanted to have default empty array for that. Now I set an empty array of known type, in the call site.

class Foo<T> {
    val foo: Array<T> = Array<Any?>(0, {}) as Array<T>
}

works just fine. Its just an unchecked cast

@spand in your example

T

is known. I was suspecting that he had a

Array<T>

inside a non-generic class

This comes down to: Don't use an

Array<T>

, use

List<T>

. "Because Java" array-generics behave differently than everywhere else.

@Andreas Sinz nope, doesn't work

...

thanks everyone, yes @diesieben07's right