These are from algebra.Monoid
Returns an instance of
T
calculated by summing all instances in iter
in one pass.
Returns an instance of
T
calculated by summing all instances in iter
in one pass. Returns None
if
iter
is empty, else Some[
T]
.
None
if iter
is empty, else an option value containing the summed
T
Override if there is a faster way to compute this sum than iter.reduceLeftOption
using plus.
Combine 21 monoids into a product monoid