What is the best way to find out what elements/numbers that are in one
object are not in another.
I came up with this method, but I'm wondering if there is a more efficient
way (and one that doesn't seem so "clunky").
#Example
id <- c(1,2,3,4,5,6,7,9,10)
example.1 <- data.frame(id)
#Second object, this time with an 8 in it.
id <- c(1,2,3,4,5,6,7,8,9,10)
example.2 <- data.frame(id)
finder <- example.2$id %in% example.1$id
example.2 <- cbind(example.2,finder)
missing.list <- subset(example.2, test2==F)
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