What is dependency injection and routing

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Dependency injection is a design pattern that allows objects to be loosely coupled by injecting their dependencies.

Dependency injection is a way to achieve inversion of control in software development.
It helps in decoupling the code by removing direct dependencies between classes.
By injecting dependencies, objects can be easily tested and reused.
Routing refers to the process of determining how an application responds to a specific URL or endpoint.
In web development, routing is used to map URLs to specific functions or controllers.
Routing helps in creating clean and organized code by separating different functionalities.
Frameworks like Angular, React, and Express provide built-in routing mechanisms.

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