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The most simple Ioc Container of Dart and Flutter

IoC #

The most simple IoC Container of Dart and Flutter

If you looking for a package that is light-weight and provide production-ready of inversion of control, then this package is right for you.

This package provides only 2 api, easy to learn and use, but definitely fits most use case in your flutter project.

If you are a server developer developing small or medium scale project, it's very likely you want to use this package. However, large scale project may need more powerful heavy-weight IoC library.

You can use it in your angular project, but we highly recommend you use dependency injection system provided by angular.

Goal #

Keep it minimal, light-weight

Important #

  1. The container does not rely on reflection, it's just a Map, so supports Flutter
  2. Dart2 is required to use this package

Feature #

  1. Supports singleton
  2. Supports binding to anything
  3. Supports lazy initialization (Developing)
  4. Detects circular dependencies (Developing)

Usage #

bind to a string:

import 'package:ioc/ioc.dart';

main() {
  Ioc().bind('MyClass', (ioc) => new MyClass());
  
  // later
  Ioc().use('MyClass'); // you will get an instance of MyClass
  // with generic if you want
  Ioc().use<MyClass>('MyClass');
}

bind to self:

import 'package:ioc/ioc.dart';

main() {
  Ioc().bind(MyClass, (ioc) => new MyClass());
  
  // later
  Ioc().use(MyClass); // you will get an instance of MyClass
}

bind to other:

import 'package:ioc/ioc.dart';

main() {
  Ioc().bind(MyClass, (ioc) => new OtherClass());
  
  // later
  Ioc().use(MyClass); // you will get an instance of OtherClass
}

bind with other dependency

import 'package:ioc/ioc.dart';

main() {
  Ioc().bind('MyClass', (Ioc ioc) {
    OtherClass other = ioc.use<OtherClass>('OtherClass');
    
    return new MyClass(other);
  });
  
  // later
  Ioc().use<MyClass>('MyClass'); // you will get an instance of OtherClass
}
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The most simple Ioc Container of Dart and Flutter

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