Update main.dart #13
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Update main.dart #13
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Primary Color: Added primaryColor: Colors.blue to ThemeData. This changes the app's primary color to blue. You can replace Colors.blue with another color like Color(0xFF800000) if you want a specific hex color.
Renaming calculator to Calculator: Dart convention for naming classes and widgets is to use PascalCase, so calculator() was renamed to Calculator(). This also assumes that the Calculator.dart file has the class Calculator.