avoid-self-assignment

v1.1.0

warning

recommended

has auto-fix

pro+

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) {
    // LINT: Avoid unnecessary self-assignment.
    //  Try checking this assignment for a potential mistake or removing it.
    someString = someString;

    if (someString == '1') {
      // LINT: Outer if statement already ensures that the assignment target equals to the assigned value.
      //  Try checking this assignment for a potential mistake or removing it.
      someString = '1';
    }
  }
}

✅ Good:

class SomeClass {
  String? someString = '123';

  void update(String newValue) {
    someString = newValue; // Correct, another value

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

Related Rules

• avoid-passing-self-as-argument
• avoid-self-compare