list_remove_unrelated_type
调用 remove 时使用了不相关类型的引用。
详细信息
#注意：此规则已在 Dart 3.3.0 中移除；它不再起作用。
不要在 List 上调用 remove，如果参数类型与实例的类型不同。
这样做会对其元素调用 == 方法，并且很可能会返回 false。
错误示例
dart
void someFunction() {
var list = <int>[];
if (list.remove('1')) print('someFunction'); // LINT
}错误示例
dart
void someFunction3() {
List<int> list = <int>[];
if (list.remove('1')) print('someFunction3'); // LINT
}错误示例
dart
void someFunction8() {
List<DerivedClass2> list = <DerivedClass2>[];
DerivedClass3 instance;
if (list.remove(instance)) print('someFunction8'); // LINT
}错误示例
dart
abstract class SomeList<E> implements List<E> {}
abstract class MyClass implements SomeList<int> {
bool badMethod(String thing) => this.remove(thing); // LINT
}正确示例
dart
void someFunction10() {
var list = [];
if (list.remove(1)) print('someFunction10'); // OK
}正确示例
dart
void someFunction1() {
var list = <int>[];
if (list.remove(1)) print('someFunction1'); // OK
}正确示例
dart
void someFunction4() {
List<int> list = <int>[];
if (list.remove(1)) print('someFunction4'); // OK
}正确示例
dart
void someFunction5() {
List<ClassBase> list = <ClassBase>[];
DerivedClass1 instance;
if (list.remove(instance)) print('someFunction5'); // OK
}
abstract class ClassBase {}
class DerivedClass1 extends ClassBase {}正确示例
dart
void someFunction6() {
List<Mixin> list = <Mixin>[];
DerivedClass2 instance;
if (list.remove(instance)) print('someFunction6'); // OK
}
abstract class ClassBase {}
abstract class Mixin {}
class DerivedClass2 extends ClassBase with Mixin {}正确示例
dart
void someFunction7() {
List<Mixin> list = <Mixin>[];
DerivedClass3 instance;
if (list.remove(instance)) print('someFunction7'); // OK
}
abstract class ClassBase {}
abstract class Mixin {}
class DerivedClass3 extends ClassBase implements Mixin {}启用
#要启用 list_remove_unrelated_type 规则，请在你的 analysis_options.yaml 文件的 linter > rules 下添加 list_remove_unrelated_type
analysis_options.yaml
yaml
linter:
rules:
- list_remove_unrelated_type如果你改为使用 YAML 映射语法来配置 linter 规则，请在 linter > rules 下添加 list_remove_unrelated_type: true
analysis_options.yaml
yaml
linter:
rules:
list_remove_unrelated_type: true