useful_classes 2.0.0

Pack with useful classes to facilitate the creation of other resources

Useful Classes

Package with useful classes to assist in creating other packages and applications.

• Introduction
• How to Install
• Logger
• OnDispose

Introduction

This package was developed with the intention of maintaining useful classes that are used in other packages, to avoid replicating copies of the same classes.

How to install

Add the dependency on pubspec.yaml.

Informing ^ at the beginning of the version, you will receive all updates that are made from version 2.0.0 up to the version before 3.0.0.

dependencies:
  useful_classes: ^2.0.0

Import the package in the source code.

import 'package:useful_classes/useful_classes.dart';

Logger

The Logger class is a simple class for printing information on the terminal only when the application is in debug mode.

Below is an example of implementing the logger.

final Logger logger = Logger();

logger.log('simple log');
/// output: simple log

logger.info('information log');
/// output: 💡 information log

logger.warning('warning log');
/// output: ⚠️ warning log

logger.error('error log');
/// output: ⛔ error log

If it is necessary to add a prefix when printing all logs, use the prefix parameter in the class constructor.

final Logger logger = Logger(prefix: 'My prefix');

OnDispose

Implement in their classes dispose() method, allowing notify listeners when class is disposed

class Test with OnDispose {

    // your class structure

    @override
    dispose() {
        // dispose your class and call `super.dispose()` to notify listeners
        super.dispose();
    }
}

In the example below, the test class will be created and an event added when discarding the class to print the text Object disposed.

final Test test = Test();
test.onDispose.add((object) => print('Object disposed'));

test.dispose();
/// output: Object disposed