prefer_null_aware_method_calls

Prefer null-aware method calls.

Instead of checking nullability of a function/method f before calling it, you can use f?.call().

BAD:

if (f != null) f!();

GOOD:

f?.call();

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

linter:
  rules:
    - prefer_null_aware_method_calls

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

linter:
  rules:
    prefer_null_aware_method_calls: true

除非另有说明，文档之所提及适用于 Dart 3.7.2 版本，本页面最后更新时间: 2025-03-07。 查看文档源码 或者 报告页面问题。