Dart
xxxxxxxxxxclass FoodSpoiledError extends StateError { FoodSpoiledError(String msg) : super(msg);}class Potato { int age; Potato(this.age); String peel() { if (age > 4) { throw new FoodSpoiledError('your potato is spoiled'); } return "peeled"; }}main() { var p = new Potato(7); try { p.peel(); } on FoodSpoiledError catch(_) { print("nope nope nope"); } try { throw("potato"); } catch(_) { print("caught a flying potato"); } p.peel(); print('not reached');}$ dart exceptions.dart nope nope nope caught a flying potato Unhandled exception: Bad state: your potato is spoiled
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