avoid_type_to_string

避免.toString() in production code since results may be minified.

務必 避免呼叫.toString() in production code, since it does not contractually return the user-defined name of the Type (or underlying class). Development-mode compilers where code size is not a concern use the full name, but release-mode compilers often choose to minify these symbols.

錯誤範例

void bar(Object other) {
  if (other.runtimeType.toString() == 'Bar') {
    doThing();
  }
}

Object baz(Thing myThing) {
  return getThingFromDatabase(key: myThing.runtimeType.toString());
}

正確範例

void bar(Object other) {
  if (other is Bar) {
    doThing();
  }
}

class Thing {
  String get thingTypeKey => ...
}

Object baz(Thing myThing) {
  return getThingFromDatabase(key: myThing.thingTypeKey);
}

若要啟用 avoid_type_to_string 規則，請在您的 analysis_options.yaml 檔案中的 linter > rules 下新增 avoid_type_to_string

linter:
  rules:
    - avoid_type_to_string

如果您改用 YAML map 語法來設定 linter 規則，請在 linter > rules 下新增 avoid_type_to_string: true

linter:
  rules:
    avoid_type_to_string: true

除非另有說明，否則本網站上的文件反映 Dart 3.7.1 版本。頁面最後更新於 2025-03-07。 查看原始碼 或 回報問題。