prefer_is_not_operator
Prefer is! operator.
This rule is available as of Dart 2.7.
Rule sets: recommended, flutter
This rule has a quick fix available.
Details
#When checking if an object is not of a specified type, it is preferable to use the 'is!' operator.
BAD:
dart
if (!(foo is Foo)) {
...
}
GOOD:
dart
if (foo is! Foo) {
...
}
Usage
#To enable the prefer_is_not_operator
rule, add prefer_is_not_operator
under linter > rules in your analysis_options.yaml
file:
analysis_options.yaml
yaml
linter:
rules:
- prefer_is_not_operator
Unless stated otherwise, the documentation on this site reflects Dart 3.5.3. Page last updated on 2024-07-03. View source or report an issue.