Generate combination of data frame and vector

Question

I know expand.grid is to create all combinations of given vectors. But is there a way to generate all combinations of a data frame and a vector by taking each r

Answer 1

As for me the simplest way is merge(df, as.data.frame(c))

  a b  c
1 1 5  9
2 2 6  9
3 3 7  9
4 1 5 10
5 2 6 10
6 3 7 10