type_init_formals

Don't type annotate initializing formals.

此规则自 Dart 2.0 版本起可用。

_规则集：recommended , flutter _

此规则提供 快速修复 。

From Effective Dart:

DON'T type annotate initializing formals.

If a constructor parameter is using this.x to initialize a field, then the type of the parameter is understood to be the same type as the field. If a a constructor parameter is using super.x to forward to a super constructor, then the type of the parameter is understood to be the same as the super constructor parameter.

Type annotating an initializing formal with a different type than that of the field is OK.

BAD:

class Point {
  int x, y;
  Point(int this.x, int this.y);
}

GOOD:

class Point {
  int x, y;
  Point(this.x, this.y);
}

BAD:

class A {
  int a;
  A(this.a);
}

class B extends A {
  B(int super.a);
}

GOOD:

class A {
  int a;
  A(this.a);
}

class B extends A {
  B(super.a);
}

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

linter:
  rules:
    - type_init_formals

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.