### Clone Calculator Repository

Source: https://github.com/microsoft/calculator/blob/main/README.md

Use this command to get the source code for the Calculator project. Ensure Git is installed on your system.

```bash
git clone https://github.com/Microsoft/calculator.git
```

--------------------------------

### Navigate to Main Page

Source: https://github.com/microsoft/calculator/blob/main/docs/ApplicationArchitecture.md

The main entry point for the application navigates to the MainPage. This is typically called from App.xaml.cs.

```C#
rootFrame.Navigate(typeof(MainPage), argument)
```

--------------------------------

### Implement INotifyPropertyChanged Interface

Source: https://github.com/microsoft/calculator/blob/main/docs/ApplicationArchitecture.md

This C++ code demonstrates the standard implementation of the INotifyPropertyChanged interface in a ViewModel. It uses the OBSERVABLE_OBJECT() macro to define the PropertyChanged event and a helper function for raising it. This is essential for data binding in the UI.

```C++
[Windows::UI::Xaml::Data::Bindable]
public ref class ApplicationViewModel sealed : public Windows::UI::Xaml::Data::INotifyPropertyChanged
{
public:
    ApplicationViewModel();

    OBSERVABLE_OBJECT();

```

--------------------------------

### Define a Read/Write Observable Property

Source: https://github.com/microsoft/calculator/blob/main/docs/ApplicationArchitecture.md

This C++ code snippet shows how to define a read/write property using the OBSERVABLE_PROPERTY_RW macro. This macro ensures that a PropertyChanged event is raised only if the property's value actually changes, optimizing UI updates. It exposes both a public getter and setter.

```C++
OBSERVABLE_PROPERTY_RW(Platform::String^, CategoryName);
```

--------------------------------

### Programmer Calculator Logical Operators

Source: https://github.com/microsoft/calculator/blob/main/docs/ManualTests.md

Demonstrates the usage of logical operators in the Programmer Calculator mode, including Rotate Left, Rotate Right, Logical Shift Left, Logical Shift Right, OR, XOR, NOT, AND, and Modulo. Note that Lsh and Rsh operations truncate decimal parts.

```text
01011001 rol 3 = 11001010.
```

```text
01011001 RoR 3 = 00101011.
```

```text
(10 multiplied by 2 three times)
    10 Lsh 3 = gives 80.
    10.345 Lsh 3 = also gives 80.
```

```text
(16 divided by 2 twice)
    16 Rsh 2 = gives 4.
    16.999 Rsh 2 = also gives 4.
```

```text
101 OR 110 = gives 111.
```

```text
101 XOR 110 = gives 11.
```

```text
NOT 1001100111001001 =
    0110011000110110.
```

```text
101 AND 110 = gives 100.
```

```text
Remainder of integer division (Modulo x)
```

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