Submitted by: Matt Dowle; Assigned to: Nobody; [R-Forge link](https://r-forge.r-project.org/tracker/index.php?func=detail&aid=2491&group_id=240&atid=978) With a named list L of `data.table` ``` R rbindlist(L, namesname="Names") ``` would do apx : ``` R rbind(L) DT[,Names:=rep(names(L),sapply(L,nrow))] movecol(DT,"Names",1) ``` with check that `length(unique(names(L))) == length(L)` [ i.e. `!any(duplicated(names(L)))` ]