Why won't this compile? ``` open class Queue<Element>(protected var backingList: MutableList&...

# getting-started

[benleggiero]

Why won't this compile?

open class Queue<Element>(protected var backingList: MutableList<Element> = mutableListOf()) {
    fun listValue():List<Element> = List(*(backingList.toTypedArray().copyOf()))
}

Error:

Error:(44, 56) Kotlin: Cannot use 'Element' as reified type parameter. Use a class instead.

[elizarov]

@benleggiero See definition of toTypedArray. Element must be reified https://kotlinlang.org/docs/reference/inline-functions.html

[benleggiero]

@elizarov but reified is only applicable to local generic types for inline functions, and I don't see any way to make that happen

[elizarov]

true. There does not seem to be a way to use it here. In this particular case, backingList.toList() would do what you are trying to do.

[benleggiero]

Thanks!