precept.accumulators
accum
all
average
by-fact-id
(by-fact-id)(by-fact-id k)Custom accumulator.
Like acc/all ewxcept sorts tuples by :t slot (fact-id). Since fact ids are created sequentially this sorts facts by order they were created. Returns list of facts. Optional k arg maps k over facts.
count
distinct
grouping-by
list-of
(list-of fact-f)(list-of fact-f list-f)Custom accumulator.
Calls fact-f on facts being accumulated. If provided, calls list-f on accumulated list result.