IterableSumByExtensions<T> extension

Numeric aggregation by a selector function.

on

• Iterable<T>

Methods

averageBy(num selector(T element)) → double?

Available on Iterable<T>, provided by the IterableSumByExtensions extension

Mean of selector applied to each element, or null if the iterable is empty.

sumBy(num selector(T element)) → num

Available on Iterable<T>, provided by the IterableSumByExtensions extension

Sums selector applied to each element.