avoid-self-assignment

added in: 1.1.0

warning

🛠

preset: recommended

Warns when a variable or a class instance field / property is assigned to itself.

Example

❌ Bad:

class SomeClass {
  String someString = '123';

  void update(String newValue) {
    someString = someString; // LINT

    if (someString == '1') {
      someString = '1'; // LINT
    }
  }
}

✅ Good:

class SomeClass {
  String? someString = '123';

  void update(String newValue) {
    someString = newValue;

    if (someString == '1') {
      someString = null;
    }
  }
}