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Event loop in asynchronous programming is responsible for processing and distributing events and tasks that occur outside the main execution thread.

In Flutter (and Dart), the event loop allows:

  • Processing asynchronous operations (e.g., input/output, timers, network requests) without blocking the main UI thread.
  • Queuing tasks and executing them when ready, ensuring application responsiveness.

Example: when you call an asynchronous function, it places a task in the event queue, and the event loop monitors its execution and calls the appropriate callbacks when the result is ready.

This enables writing non-blocking code and improves the performance and responsiveness of applications.