use_late_for_private_fields_and_variables

Use late for private members with a non-nullable type.

此规则目前处于 experimental 状态，自 Dart 2.10 版本起可用。

Use late for private members with non-nullable types that are always expected to be non-null. Thus it's clear that the field is not expected to be null and it avoids null checks.

BAD:

int? _i;
m() {
  _i!.abs();
}

GOOD:

late int _i;
m() {
  _i.abs();
}

OK:

int? _i;
m() {
  _i?.abs();
  _i = null;
}

要启用 use_late_for_private_fields_and_variables 规则，请在你的 analysis_options.yaml 文件中，在 linter > rules 下添加 use_late_for_private_fields_and_variables ：

linter:
  rules:
    - use_late_for_private_fields_and_variables

除非另有说明，否则本网站上的文档反映的是 Dart 3.6.0。页面最后更新于 2025-02-05。 查看源代码 或 报告问题.