unnecessary_ non_ null_ assertion
The '!' will have no effect because the receiver can't be null.
Description
#
The analyzer produces this diagnostic when the operand of the
!
operator
can't be
null
.
Example
#The following code produces this diagnostic because x
can't be null
:
dart
int f(int x) {
return x!;
}
Common fixes
#Remove the null check operator (!
):
dart
int f(int x) {
return x;
}
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Unless stated otherwise, the documentation on this site reflects Dart 3.9.2. Page last updated on 2025-9-1. View source or report an issue.