Unnest a list column directly into several columns

Question

Can I unnest a list column directly into n columns?

The list can be assumed to regular, with all elements being of equal length.

If instead of a lis

Answer 1

With data.table it's pretty simple:

library("data.table")
setDT(df1)
df1[, c("V1", "V2") := transpose(values)]
df1
#    gr values V1 V2
# 1:  a    1,2  1  2
# 2:  b    3,4  3  4
# 3:  c    5,6  5  6