Skip to main content

avoid-passing-self-as-argument

added in: 1.9.0
warning
Pro+
preset: recommended

Warns when an object is used as an argument to its own method.

Example​

❌ Bad:

void main() {
  final list = [1, 2, 3];

  list.addAll(list); // LINT: This object is used as an argument to its own method. Try using a different argument or rewriting the method implementation.

  final object = Some();
  object.work(object); // LINT: This object is used as an argument to its own method. Try using a different argument or rewriting the method implementation.

  final another = Another([1, 2, 3]);
  another.values.addAll(another.values); // LINT: This object is used as an argument to its own method. Try using a different argument or rewriting the method implementation.
}

class Some {
  void work(Some another) {}
}

class Another {
  final List<int> values;

  const Another(this.values);
}

✅ Good:

void main() {
  final list = [1, 2, 3];
  final anotherList = [4, 5, 6];

  list.addAll(anotherList); // Correct, another argument

  final another = Another([1, 2, 3]);
  another.values.addAll(anotherList);
}

Additional Resources​