assignment_to_final
'{0}' can't be used as a setter because it's final.
Description
#The analyzer produces this diagnostic when it finds an invocation of a setter, but there's no setter because the field with the same name was declared to be final
or const
.
Example
#The following code produces this diagnostic because v
is final:
dart
class C {
final v = 0;
}
f(C c) {
c.v = 1;
}
Common fixes
#If you need to be able to set the value of the field, then remove the modifier final
from the field:
dart
class C {
int v = 0;
}
f(C c) {
c.v = 1;
}
Unless stated otherwise, the documentation on this site reflects Dart 3.7.3. Page last updated on 2025-05-08. View source or report an issue.