Fastest way to detect if vector has at least 1 NA?

Question

What is the fastest way to detect if a vector has at least 1 NA in R? I\'ve been using:

sum( is.na( data ) ) > 0

But that

Answer 1

You can try:

d <- c(1,2,3,NA,5,3)

which(is.na(d) == TRUE, arr.ind=TRUE)