let array = arr(); array.push(0); array.push(1); array.push(2); array.push(3); array.push(4); array.push(5); let ok = false; for i in array { if i == 4 { continue; } if i == 5 { ok = true; } if i == 4 { panic("This should not happen"); } } if !ok { panic("This should not happen"); } let it = 0; ok = false; while it <= 100 { if it == 99 { it.inc(); continue; } if it == 100 { ok = true; } if it == 99 { panic("This should not happen"); } it.inc(); } if !ok { panic("This should not happen"); }