Reverted to R-subset as subsetVector retains attributes
Reverted to R-subset as subsetVector retains attributes

Added a TODO to fix this later.

vlulla/data.table,Rdatatable/data.table,jangorecki/data.table,jangorecki/data.table,jangorecki/data.table,Rdatatable/data.table,Rdatatable/data.table,vlulla/data.table,vlulla/data.table,jangorecki/data.table,Rdatatable/data.table,vlulla/data.table