SplitBlock-class: Split one chunked object using another as a factor

In clarkfitzg/autoparallel: Transform Serial R Code into Parallel R Code

Description

GROUP BY style code becomes a split followed by an lapply, and both are parallel blocks. The semantic meaning of this in a schedule is that the data will be grouped, ready for an lapply on the groups.

Slots

groupData

names of chunked variables to split according to groupIndex

groupIndex

names of chunked variables that define the split

lhs

name of the chunked variable that holds the result of the split. This doesn't necessarily need to be here, but we use it to generate code.

clarkfitzg/autoparallel documentation built on Nov. 24, 2020, 2:20 p.m.