extensions/iterable library

Collection helpers: grouping, zipping, and numeric aggregates.

Extensions

IterableExtensions on Iterable<T>
Extensions on Iterable for querying and grouping.
IterableNestedExtensions on Iterable<Iterable<T>>
Helpers for iterables of iterables.
NumIterableExtensions on Iterable<num>
Numeric aggregates (sum, min, max, average).
RecordIterableExtensions on Iterable<(R, S)>
Helpers for iterables of 2-element records.