跳转至正文

unnecessary_null_aware_assignments

Stable
Recommended
Fix available

Avoid null in null-aware assignment.

Details

#

AVOID null in null-aware assignment.

Using null on the right-hand side of a null-aware assignment effectively makes the assignment redundant.

BAD:

dart 
var x;
x ??= null;

GOOD:

dart 
var x;
x ??= 1;

Enable

#

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

analysis_options.yaml
yaml 
linter:
  rules:
    - unnecessary_null_aware_assignments

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

analysis_options.yaml
yaml 
linter:
  rules:
    unnecessary_null_aware_assignments: true

除非另有说明，文档之所提及适用于 Dart 3.9.2 版本报告页面问题。