Break / continue

Exit a loop early or skip to the next iteration.

break exits the innermost enclosing loop immediately. continue skips the rest of the current iteration and jumps to the next one.

Both require a semicolon: break; and continue;.

They work inside **while**, C-style **for**, **for (item von array)**, and **for (key, value von map)** loops. Using either outside a loop is a compile-time error.

In a C-style for loop with an increment clause, continue runs the increment before re-checking the condition: same as C.

break in while

var n = 0;
while (n < 10) {
  n = n + 1;
  if (n == 4) break;
  print n;
}

output

1
2
3

continue in for

for (var i = 0; i < 5; i = i + 1) {
  if (i == 2) continue;
  print i;
}

output

break and continue in for-von

var xs = #[1, 2, 3, 4, 5];

for (x von xs) {
  if (x == 2) continue;
  if (x == 4) break;
  print x;
}

output

1
3

Nested loops: break inner only

var i = 0;
while (i < 3) {
  i = i + 1;
  var j = 0;
  while (j < 3) {
    j = j + 1;
    if (j == 2) break;
    print i;
    print j;
  }
}

output

Notes