Can you explain the difference between hot reload and hot restart in Flutter?

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In Flutter, hot reload and hot restart are both used to update your app during development, but they behave differently in how they apply code changes and manage the app's state.

Hot Reload

• Definition: Injects updated source code files into the Dart Virtual Machine (VM) while the app is running.

• Use Case: Ideal for making quick changes to the UI (e.g., layout, color, text) or adding minor features.

• State Retention: Preserves the app state—so you don’t lose the current screen or user input.

• Speed: Very fast, usually takes less than a second.

• Limitations: Cannot apply changes to global variables, main() method, or class structure.

📌 Example: Changing the text color on a button or modifying padding.

Hot Restart

• Definition: Completely restarts the app, reinitializing the app’s state from scratch.

• Use Case: Needed when you change the main() function, modify global variables, or want to reset the app state.

• State Retention: Clears all app state—as if the app was launched fresh.

• Speed: Slower than hot reload, but faster than a full app restart from the device.

📌 Example: Changing initial values in a main() function or altering app-wide configurations.

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