It takes an iterable of indices and returns an aggregate index. The
returned value must be between the min and the max index, and only return
undefined if and only if indices is empty.
Hierarchy
Aggregator
Aggregator(indices): undefined | number
aggregate indices
Parameters
indices: Iterable<number>
the indices to aggregate
Returns undefined | number
index - the aggregate index, undefined if and only if indices
is empty
an interface for aggregating numbers
It takes an iterable of indices and returns an aggregate index. The returned value must be between the min and the max index, and only return undefined if and only if indices is empty.