What is the most useful R trick? [closed]

Answer 1

My new favorite thing is the foreach library. It lets you do all of the nice apply things, but with a somewhat easier syntax:

list_powers <- foreach(i = 1:100) %do% {
  lp <- x[i]^i
  return (lp)
}

The best part is that if you are doing something that actually requires a significant amount of time, you can switch from %do% to %dopar% (with the appropriate backend library) to instantly parallelize, even across a cluster. Very slick.