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Note

In C#,

true

and 

false

can be used as operators in addition to literals. This functionality can be useful

when building custom types that represent true, false, and null (meaning neither true nor false).

Overloading Binary Operators

To illustrate the process of overloading binary operators, assume the following simple Point struc-

ture defined in a new Console Application named OverloadedOps:

// Just a simple everyday C# struct.

public struct Point

{

private int x, y;

public Point(int xPos, int yPos)

{

x = xPos;

y = yPos;

}

public override string ToString()

{

return string.Format("[{0}, {1}]", this.x, this.y);

}

}

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Now, logically speaking, it makes sense to add Points together. For example, if you added

together two Point variables, you should receive a new Point that is the summation of the x and y

values. On a related note, it may be helpful to subtract one Point from another. Ideally, you would

like to be able to author the following code: