avoid_classes_with_only_static_members

Avoid defining a class that contains only static members.

此规则自 Dart 2.0 版本起可用。

From Effective Dart:

AVOID defining a class that contains only static members.

Creating classes with the sole purpose of providing utility or otherwise static methods is discouraged. Dart allows functions to exist outside of classes for this very reason.

BAD:

class DateUtils {
  static DateTime mostRecent(List<DateTime> dates) {
    return dates.reduce((a, b) => a.isAfter(b) ? a : b);
  }
}

class _Favorites {
  static const mammal = 'weasel';
}

GOOD:

DateTime mostRecent(List<DateTime> dates) {
  return dates.reduce((a, b) => a.isAfter(b) ? a : b);
}

const _favoriteMammal = 'weasel';

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

linter:
  rules:
    - avoid_classes_with_only_static_members

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.