Specialize differential dataflow operators.
Differential dataflow introduces a small number of specialized operators on collections. These
operators have specialized implementations to make them work efficiently, and are in addition
to several operations defined directly on the
Collection type (e.g.
Types and traits for arranging collections.
Aggregates the weights of equal records into at most one record.
Group records by a key, and apply a reduction function.
Iterative application of a differential dataflow fragment.
Match pairs of records based on a key.
Applies a reduction function on records grouped by key.
Reduce the collection to one occurrence of each distinct element.