Operator_SubtractRight Method
Used to overload the - operator, providing custom functionality. Operator_SubtractRight is the same as Operator_Subtract but the implicit Self instance is on the right instead of the left in the subtraction.
Syntax
Notes
Create an Operator_SubtractRight function in a class to specify the functionality of the + operator for that class.
The ordinary methods are always preferred; REALbasic uses the Right versions only if there is no legal left version.
Example
Suppose you have a class, Vector, that can store a vector. To define the - operator for this class, create a method of the Vector class called Operator_SubtractRight.
The Vector class has two Integer properties, x and y.
Operator_SubtractRight is defined as:
//lhs stands for left-hand-side, the vector to be added to Self
Dim ret as New Vector //the difference between the two vectors
ret.x=lhs.x + Self.x
ret.y=lhs.y + Self.y
Return ret
See Also
- operator, Operator_Subtract function.