in r combine a list of lists into one list -

i cannot find out can list of entry of sublists? here's simple example, list o lists:

listoflists <- list("a"=list(c(1,2,3),c(2,34,2)), "b" = list(c(1,2),c(2,3,2,1)), "c" = list(c("sdf",3,2))) $a $a[[1]] [1] 1 2 3  $a[[2]] [1]  2 34  2   $b $b[[1]] [1] 1 2  $b[[2]] [1] 2 3 2 1   $c $c[[1]] [1] "sdf" "3"   "2" 

i found sad way using for-loop:

listofvectors <- list() (i in 1:length(listoflists))  {listofvectors <- c(listofvectors, listoflists[[i]])} 

we can use concatenate function (c) within do.call flatten nested list

res <- do.call(c, listoflists) all.equal(listofvectors, res, check.attributes = false) #[1] true 

or @d.b mentioned in comments, unlist recursive = false can work

unlist(listoflists, recursive = false)