Loops

while

i = 0
while i < 3
  println(i)
  i = i + 1
endwhile

The condition is checked before every iteration and follows the rules in Conditionals.

repeat

repeat 5
  println('hi')
endrepeat

repeat 3, i
  println(i)      # 0, 1, 2
endrepeat

repeat <count> runs its body count times. The count must be a single number or variable (an expression such as n * 2 is a compile error); a variable is re-read on every iteration. With repeat <count>, <name> the variable name receives the iteration number, starting at 0. After the loop it equals the count.

Loops can nest. Each repeat level keeps its own hidden counter.

break and continue

break leaves the innermost loop, continue jumps to its next iteration. Both are compile errors outside a loop.

i = 0
while i < 10
  i = i + 1
  if i == 3
    continue
  endif
  if i == 6
    break
  endif
  println(i)     # 1 2 4 5
endwhile