Angular is a powerful framework that brings a wealth of features designed to enhance the app development process. One of the standout features is two-way data binding, which allows for a seamless synchronization between the model and the view. When the model changes, the view updates automatically, and vice versa, reducing the need for boilerplate code. This feature significantly simplifies the development of dynamic applications, making it easier to focus on building a robust user experience.

Another prominent feature of Angular is its dependency injection capability. This design pattern optimizes the management of service instances within your application, promoting reusability and modularity. By injecting dependencies rather than instantiating them directly, developers can create more efficient and testable applications. Combined with Angular's component-based architecture, these features not only enhance performance but also lead to cleaner, more maintainable codebases.

Creating a stunning Angular dashboard involves multiple steps that effectively combine design and functionality. First, ensure you have a solid understanding of Angular, a powerful framework for building dynamic web applications. Begin by setting up your development environment with Node.js and Angular CLI. This allows you to generate a new Angular project quickly. After your environment is ready, you can start your dashboard project by creating components that will serve as the foundation of your user interface. Use Angular Material for pre-designed components that will enhance the aesthetics and usability of your dashboard.

Once you have the basic layout, it's time to focus on the data visualization aspects of your Angular dashboard. Integrate libraries like Chart.js or D3.js to represent data in a visually appealing way. Follow these simple steps:

1. Import the necessary libraries into your Angular project.
2. Create service files to handle data fetching from your API.
3. Build components that will encompass your charts and graphs.

When developing with Angular, avoiding common mistakes is crucial for ensuring a smooth and efficient development process. One of the most frequent pitfalls is neglecting proper component structure. Developers often create large, unwieldy components that do too much, leading to difficulties in maintenance and understandability. Instead, components should be designed to be reusable and focused on a single responsibility. Additionally, failing to implement change detection strategies can lead to performance issues, as Angular continuously checks for changes across the entire application. Utilizing OnPush change detection can drastically improve performance by limiting the areas that Angular needs to monitor.

Another mistake to be mindful of is improper state management. Without a clear strategy in place, managing the state of an application can become chaotic and lead to bugs that are difficult to track down. It is advisable to utilize services or state management libraries like NgRx to maintain a centralized store for state that is easily accessible and manageable. Lastly, overlooking unit testing is a major error; testing ensures that components are functioning as expected and helps prevent regressions in future updates. By making testing a priority, developers can catch issues early and ensure a smoother development process overall.