unnecessary_null_aware_assignments
Unnecessary assignment of 'null'.
Description
#The analyzer produces this diagnostic when the right-hand side of a null-aware assignment is the null
literal.
Example
#The following code produces this diagnostic because the null aware operator is being used to assign null
to s
when s
is already null
:
void f(String? s) {
s ??= null;
}
Common fixes
#If a non-null value should be assigned to the left-hand operand, then change the right-hand side:
void f(String? s) {
s ??= '';
}
If there is no non-null value to assign to the left-hand operand, then remove the assignment:
void f(String? s) {
}
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.