How to stop Dart's .forEach()?

Question

List data = [1, 2, 3];
data.forEach((value) {
  if (value == 2) {
    // how to stop?
  }
  print(value);
});

Answer 1

Dart does not support non-local returns, so returning from a callback won't break the loop. The reason it works in jQuery is that each() checks the value returned by the callback. Dart forEach callback returns void.

http://docs.jquery.com/Core/each

Answer 2

Using Multiple Loop

Break Outer Loop

OUTER: for (var i = 0; i < m.length; i++) {
  for (var j = 0; j < m[i].length; j++) {
    if (m[i][j] < 0) {
      print("Negative value found at $i,$j: ${m[i][j]}");
      break OUTER;
    }
  }
}

Continue Outer Loop

  outer: for (var v in a) {
    for (var w in b) {
      if (w == v) continue outer;
    }
    print(v);
  }

Answer 3

based on Greg Lowe post, I used where for my project and also it works.

var data = [1, 2, 3];
data.where((val) => val != 2).forEach(print);