How to convert a list of lists to a dataframe - non-identical lists

Question

I have a list where each element is a named list, but the elements are not the same everywhere. I have read solutions on how to convert lists of lists to dataframes here and

Answer 1

Use lapply to convert your list elements to data.frames and rbind_all that:

rbind_all(lapply(lisnotOK,data.frame))
   a b     c    d
1  1 2    hi 
2 NA 2 hello nope
Warning message:
In rbind_all(lapply(lisnotOK, data.frame)) :
  Unequal factor levels: coercing to character

Or from plyr, ldply with data.frame:

ldply(lisnotOK,data.frame)
   a b     c    d
1  1 2    hi 
2 NA 2 hello nope