What is dependency injection Dart?

Dependency Injection (DI) is a design pattern used to implement Inversion of Control . It allows the creation of dependent objects outside of a class and provides those objects to a class through different ways.

There are three types of dependency injection — constructor injection, method injection, and property injection .

If you have a really small project with 12 classes, then a DI framework is almost certainly overkill . As a rule of thumb, the point where it becomes truly useful is when you find yourself repeatedly writing code that wires up object graphs with multiple dependencies and have to think about where to put that code.

Dependency Injection is a way of making the dependencies of an object available via another object , and these dependencies are usually known as services. These services can be blocks of code, containing different functionalities that can be easily reused in different parts of your project.

As explained earlier, dependency injection in Flutter is an object-oriented technique that sends the dependencies of another object to an object . The objective of the dependency injection strategy is to eliminate this dependency by isolating the use from the formation of the item.1 Eyl 2021