# Collection Is a [Iterable] with known `size`, a finite [Iterable]: class Collection : Iterable { val size } | name | description | |------------------------|------------------------------------------------------| (1) : `comparator(a,b)` should return -1 if `a < b`, +1 if `a > b` or zero. See [List], [Set], [Iterable] and [Efficient Iterables in Kotlin Interop](EfficientIterables.md) [Iterable]: Iterable.md [List]: List.md [Set]: Set.md