Suppose you have a list of values
x <- list(a=c(1,2,3), b = c(2,3,4), c=c(4,5,6))
I would like to find unique values from all list elements combined. So far, the following code did the trick
unique(unlist(x))
Does anyone know a more efficient way? I have a hefty list with a lot of values and would appreciate any speed-up.