TxArrayStore · Flutter

Copied in-memory collection with local queries and key-based CRUD operations.

Vue: data = [], key = "id". Dart: data is required; without keyOf only queries are supported. Construction copies the list. Duplicate keys, insertion of existing keys and key changes are rejected. update/remove with an unknown key fail; byKey returns undefined/null.

TxArrayStore

Parameter	Type	Default	Meaning
data	`List<T>`	`required`	Records or event payload.
keyOf	`TxKeyOf<T>?`	`null`	Reads the stable record key.

Member / type / return	Meaning
`List<T> get data`	Records or event payload.
`bool get canByKey`	Whether the store supports ByKey.
`bool get canInsert`	Whether the store supports Insert.
`bool get canUpdate`	Whether the store supports Update.
`bool get canRemove`	Whether the store supports Remove.
`TxLoadResult<T> load(TxLoadOptions<T> options)`	Loads using the supplied options; DataSource uses current query state without arguments. Errors propagate.
`T? byKey(Object key)`	Reads a record by key; missing keys return undefined (Vue) or null (Dart).
`T insert(T item)`	Inserts a record with a unique key and returns it.
`T update(Object key, T Function(T) change)`	Updates a notification or record.
`void remove(Object key)`	Removes the record or recursively removes a file/directory tree.

dart

import 'package:tecexpress/tecexpress.dart';

Future<void> example() async {
  final store = TxArrayStore<Map<String, Object>>([{'id': 1}], keyOf: (row) => row['id']!);
  print(store.load(const TxLoadOptions()));
  print(store.byKey(1));
  store.insert({'id': 2});
  store.update(2, (row) => {...row, 'name': 'Two'});
  store.remove(2);
}

TxArrayStore.