最終更新:2023-07-21 (金) 05:46:10 (301d)

selector

https://recoiljs.org/docs/basic-tutorial/selectors/

例

const filteredTodoListState = selector({
  key: 'FilteredTodoList',
  get: ({get}) => {
    const filter = get(todoListFilterState);
    const list = get(todoListState);

    switch (filter) {
      case 'Show Completed':
        return list.filter((item) => item.isComplete);
      case 'Show Uncompleted':
        return list.filter((item) => !item.isComplete);
      default:
        return list;
    }
  },
});

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