unnecessary_const
Unnecessary 'const' keyword.
Description
#The analyzer produces this diagnostic when the keyword const is used in
a constant context. The keyword isn't required because it's implied.
Example
#The following code produces this diagnostic because the keyword const in
the list literal isn't needed:
dart
const l = const <int>[];The list is implicitly const because of the keyword const on the
variable declaration.
Common fixes
#Remove the unnecessary keyword:
dart
const l = <int>[];除非另有说明，文档之所提及适用于 Dart 3.7.3 版本，本页面最后更新时间: 2025-05-08。 查看文档源码 或者 报告页面问题。