unnecessary_underscores

Unnecessary use of multiple underscores.

The analyzer produces this diagnostic when an unused variable is named with multiple underscores (for example __). A single _ wildcard variable can be used instead.

The following code produces this diagnostic because the __ parameter is unused:

void function(int __) { }

Replace the name with a single underscore:

void function(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。