assignment_to_final_local
The final variable '{0}' can only be set once.
Description
#The analyzer produces this diagnostic when a local variable that was declared to be final is assigned after it was initialized.
Example
#The following code produces this diagnostic because x
is final, so it can't have a value assigned to it after it was initialized:
dart
void f() {
final x = 0;
x = 3;
print(x);
}
Common fixes
#Remove the keyword final
, and replace it with var
if there's no type annotation:
dart
void f() {
var x = 0;
x = 3;
print(x);
}
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.