A task consumes the items of a Feed and produces new ones, transforming, filtering, reordering or
regrouping items along the way; the resulting feed accepts further tasks, so tasks chain into longer pipes.
Note
Optional values need not be filtered out: undefined entries are dropped as they re-enter the feed.
Type Parameters
V
The type of input values, never undefined, as feeds never carry it
Intermediate operation applied to a feed.
A task consumes the items of a Feed and produces new ones, transforming, filtering, reordering or regrouping items along the way; the resulting feed accepts further tasks, so tasks chain into longer pipes.
Optional values need not be filtered out:
undefinedentries are dropped as they re-enter the feed.