unnecessary_const

Avoid const keyword.

AVOID repeating const keyword in a const context.

BAD:

class A { const A(); }
m(){
  const a = const A();
  final b = const [const A()];
}

GOOD:

class A { const A(); }
m(){
  const a = A();
  final b = const [A()];
}

To enable the unnecessary_const rule, add unnecessary_const under linter > rules in your analysis_options.yaml file:

linter:
  rules:
    - unnecessary_const

If you're instead using the YAML map syntax to configure linter rules, add unnecessary_const: true under linter > rules:

linter:
  rules:
    unnecessary_const: true

除非另有说明，文档之所提及适用于 Dart 3.7.0 版本，本页面最后更新时间: 2025-01-27。 查看文档源码 或者 报告页面问题。