avoid_null_checks_in_equality_operators

Don't check for null in custom == operators.

此规则自 Dart 2.0 版本起可用。

此规则提供 快速修复 。

NOTE: This lint has been replaced by the non_nullable_equals_parameter warning and is deprecated. Remove all inclusions of this lint from your analysis options.

DON'T check for null in custom == operators.

As null is a special value, no instance of any class (other than Null) can be equivalent to it. Thus, it is redundant to check whether the other instance is null.

BAD:

class Person {
  final String? name;

  @override
  operator ==(Object? other) =>
      other != null && other is Person && name == other.name;
}

GOOD:

class Person {
  final String? name;

  @override
  operator ==(Object? other) => other is Person && name == other.name;
}

要启用 avoid_null_checks_in_equality_operators 规则，请在你的 analysis_options.yaml 文件中，在 linter > rules 下添加 avoid_null_checks_in_equality_operators ：

linter:
  rules:
    - avoid_null_checks_in_equality_operators

除非另有说明，否则本网站上的文档反映的是 Dart 3.6.0。页面最后更新于 2025-02-05。 查看源代码 或 报告问题.