for keyword

for runs a block code repeatedly, once for each occurrence in a list.

let nums = [1, 2, 3]

for num in nums {
  dbg(num)
}

To stop loop evaluation, or to skip a loop iteration, see break and continue.

As with let, you can use destructuring in for loop headers.

let game_scores = [(123, "Alice"), (45, "Bob")]

for (score, name) in game_scores {
  dbg(score)
  dbg(name)
}

For looping when you don't have a list, see while.