Overloading the Main Thread with Heavy Operations

Blocking the main thread by running heavy operations on it can lead to frozen UIs and frustrated users. For example, reading a large file directly on the main thread is a recipe for disaster:

void readLargeFile() {
  final file = File('large_file.txt');
  final contents = file.readAsStringSync(); // Blocking operation
  print(contents);
}

Instead, you can offload this operation to a background thread using Flutter's compute() function:

Future<void> readLargeFile() async {
  final contents = await compute(_readFile, 'large_file.txt');
  print(contents);
}

String _readFile(String path) {
  final file = File(path);
  return file.readAsStringSync();
}

This way, you keep the UI thread responsive while performing the heavy file operation in the background.