unnecessary_null_in_if_null_operators

Avoid using null in ?? operators.

This rule is available as of Dart 2.0.

Rule sets: recommended, flutter

This rule has a quick fix available.

AVOID using null as an operand in ?? operators.

Using null in an if null operator is redundant, regardless of which side null is used on.

BAD:

var x = a ?? null;
var y = null ?? 1;

GOOD:

var x = a ?? 1;

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

linter:
  rules:
    - unnecessary_null_in_if_null_operators

除非另有说明，文档之所提及适用于 Dart 3.5.4 版本，本页面最后更新时间: 2024-08-02。 查看文档源码 或者 报告页面问题。