Skip to main content

avoid-unused-assignment

added in: 1.22.0
warning
Pro+

Warns when an assignment is not used in the subsequent statements.

Example​

❌ Bad:

void fn1() {
  var v = 'used';
  doSomething(v);
  v = 'unused'; // LINT
}

void fn2(bool condition) {
  var v = 'used';
  if (condition) {
    v = 'unused'; // LINT
    return;
  }
  doSomething(v);
}

✅ Good:

void fn1() {
  var v = 'used';
  doSomething(v);
}

void fn2(bool condition) {
  var v = 'used';
  if (condition) {
    return;
  }
  doSomething(v);
}