C# 4.0 Unleashed

Defining Operators

The definition of an operator looks like a public static method that uses the operator keyword to indicate its specialized nature. Unary operators should take exactly one single parameter, whereas binary ones should take two. None of the parameters can be passed by reference or as an output parameter. The return type does have restrictions for certain operators, too.

As an example, consider the Vector class again. This time we’ll define a set of useful operators:

Notice that with the unary arithmetic negation operator and the binary arithmetic addition operator it’s not yet possible to do binary arithmetic subtraction unless ...