custom-iterables-in-dart.dart

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class Address with IterableMixin {
  final String line1;
  final String line2;
  final String postCode;

  Address({
    required this.line1,
    required this.line2,
    required this.postCode,
  });

  @override
  Iterator<String> get iterator => [line1, line2, postCode].iterator;
}

void testIt() {
  final address = Address(
    line1: 'Foo bar avenue, #10',
    line2: 'Baz street',
    postCode: '123456',
  );
  for (final line in address) {
    devtools.log(line);
  }
}