prefer_if_null_operators

Prefer using ?? operators.

PREFER using ?? operators instead of null checks and conditional expressions.

BAD:

v = a == null ? b : a;

GOOD:

v = a ?? b;

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

linter:
  rules:
    - prefer_if_null_operators

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

linter:
  rules:
    prefer_if_null_operators: true

Unless stated otherwise, the documentation on this site reflects Dart 3.6.0. Page last updated on 2025-01-27. View source or report an issue.