A reactive programming framework centered around the Cell class and its extensions, particularly the Collective family of classes that implement reactive collections CollectiveSet, CollectiveList, CollectiveQueue and CollectionValue. This framework provides a comprehensive reactive programming solution for Dart, with particular strength in managing complex state and data flow in applications.

Features

1. Reactive Programming Model: Automatic propagation of changes through a network of cells

2. Validation System: Configurable rules for what operations are allowed

3. Flexible Signal Processing: Customizable signal transformation and propagation

4. Collection Support: Reactive versions of common collection types (Set, List, Queue, Value)

5. Modifiable/Unmodifiable Views: Both mutable and immutable variants of all containers

6. Asynchronous Support: Async interfaces for all modifiable operations

Core Components and Their Relationships

1. Cell - The Fundamental Reactive Unit

   Purpose: Acts as the basic building block of reactivity

2. Receptor - Signal Processing

   Purpose: Handles signal transformation and propagation

3. Synapses - Inter-Cell Communication

   Purpose: Manages connections between cells

4. Properties - Cell Configuration

   Purpose: Contains all configurable aspects of a cell

5. TestRule/TestObject - Validation System

   Purpose: Provides validation rules for cell operations

6. Signal - Data Carrier

   Purpose: Carries data between cells

7. Deputy - Delegation Pattern

   Purpose: Delegates to original Cell with reduced permissions or accesses

Key Architectural Patterns

1. Reactive Flow:

   • Signals enter through Receptor

   • TestObject validates the Signal

   • If valid, processed by Receptor.transform

   • Output signal propagated via Synapses

2. Decorator Pattern:

   • Deputy wraps cells to modify behavior

   • CellAsync adds asynchronous capabilities

3. Composite Pattern:

   • TestObject can contain multiple TestRule instances

   • Collective types manage collections of cells using CollectiveSet, CollectiveList, CollectiveQueue and CollectiveQueue.

4. Strategy Pattern:

   • Different Receptor implementations handle signal processing

   • Synapses implementations vary propagation behavior

Getting started

To use this package, add the following to your pubspec.yaml file:

dependencies:
  cell: ^<latest_version>

Then, run dart pub get to install the package.

import 'package:cell/cell.dart';
import 'package:cell/collective.dart';

Usage

// Create a basic cell
final cell = Cell();
final boundCell = Cell(bind: cell);

// Create a listening cell
final listener = Cell.listen<String>(
  bind: baseCell,
  listen: (signal, _) => print('Received: ${signal.body}'),
);

// Create a transforming cell
final transformer = Cell.signaling<Signal<String>, Signal<int>(
  bind: baseCell,
  map: (signal, _) => Signal<int>(signal.body?.length),
);

Example: with Collective bounded

// Create source cell
final source = CollectiveValue<int>(5);

// Create transformed cell
final squared = Cell.signaling<int,int>(
 bind: source,
  transform: (signal, _) => Signal(signal.body * signal.body)
);

// Create logger
final logger = Cell.listen<int>(
  bind: squared,
  listen: (signal, _) => print('Value squared: ${signal.body}')
);

// Update source - automatically propagates
source.value = 10; // Logs "Value squared: 100"

Disclaimer

It is an A.I. generated document. The content is based on the code provided and may not accurately reflect the intended functionality or usage of the package. Please review and modify as necessary to ensure accuracy and clarity.