prefer_constructors_over_static_methods

Prefer defining constructors instead of static methods to create instances.

此规则自 Dart 2.0 版本起可用。

PREFER defining constructors instead of static methods to create instances.

In most cases, it makes more sense to use a named constructor rather than a static method because it makes instantiation clearer.

BAD:

class Point {
  num x, y;
  Point(this.x, this.y);
  static Point polar(num theta, num radius) {
    return Point(radius * math.cos(theta),
        radius * math.sin(theta));
  }
}

GOOD:

class Point {
  num x, y;
  Point(this.x, this.y);
  Point.polar(num theta, num radius)
      : x = radius * math.cos(theta),
        y = radius * math.sin(theta);
}

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

linter:
  rules:
    - prefer_constructors_over_static_methods

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.