Is there a good resource for understanding the usage differences between

List

and

Array

in Kotlin? Or

Array<Double>

and

DoubleArray

? Meaning when should you use one or the other, not what they literally are in terms of blocks of memory or the like.

Array<Double>

is

Double[]

and

DoubleArray

is

double[]

. Prefer the latter whenever possible (i.e. not working with generics). Also generally speaking, only use

Array

instead of

List

for performance sensitive code.

When it comes to list vs array, the general rule of thumb is to use a list unless you need an array. If you don't know if you need an array, you likely don't.