flow controls

knitr::opts_chunk$set(echo = TRUE)
knitr::opts_chunk$set(message = TRUE)

next statement

• skip 1 iteration

x <- 1:5
for (val in x) {
  if (val == 3){
    next
  }
print(val)
}

break statement

• halt entire loop

x <- 1:5
for (val in x) {
  if (val == 3){
    break
  }
print(val)
}

invisible(), warning()

• R equivalent of python’s pass statement

my_func  <- function(x){
  invisible()
}
my_func(100)

foo = function(){
  # write this tomorrow
  warning("You ran foo and I havent written it yet")
}
foo()

EOF