Not enough information to infer type variable T

Support
1

I’m using a library function call for which the return type is Any. So, in this case the actual return type is an array of doubles. Actually, what’s returned is {double[1]@ …} so it is (I think) a two dimensional array of doubles. So, I want to extract a single array of doubles or Doubles that is, I just want to get at the numbers. This is proving to be a huge hassle. So much of Kotlin ultimately ends up being a hassle. Is there a quick and dirty way to convert/cast this Any type to an array of doubles (DoubleArray) or Doubles (Array)? I don’t care about jumping through hoops to make the code bullet proof as it is just a one up analysis that will never leave my computer.
Thanks.

2

From your description it is hard to understand what you need exactly. Casting to array of doubles is as simple as: obj as DoubleArray.

3

Nope. code snippit,
val data: Any
val data2: DoubleArray
…
data = dataset.getData()
data2 = data as DoubleArray

run result,
Got,
Exception in thread “main” java.lang.ClassCastException: class [[D cannot be cast to class [D ([[D and [D are in module java.base of loader ‘bootstrap’)
at io.jhdf.examples.MainKt.main(Main.kt:23)
at io.jhdf.examples.MainKt.main(Main.kt)

4

In this case: as Array<DoubleArray>.

1 Like
5

Thanks. That worked.