[R-Forge #5249] "fill=TRUE" argument should be added to 'rbindlist' and must be implemented in C

[arunsrinivasan]

Submitted by: Arun ; Assigned to: Arun ; R-Forge link

rbind has a fill=TRUE argument currently which uses rbindlist to do the filling (similar to plyr's rbind.fill), but it does so in R. This can be made a lot quicker in C.

Also, rbindlist by itself should get the fill=TRUE argument. Then one can use rbindlist or rbind (which should internally call rbindlist anyways to take advantage of the fill argument.