Conditional Function Definition

["Marcello Chiuminatto" <mchiuminatto@...>]

Hi everybody

 

Maybe someone can help with this.

 

I have “polymorphism” situation where I want to define a function that depending on a condition will have different signature and behaviors

 

I would like something like this, but unfortunately does not work. Is there any other way to implement this in lua?

 

MyClass = {

}

 

If somecondition == 1 then

MyClass.f = function (self, x)

               return x*2

end

end

 

if somecondition == 2 then

MyClass.f = function (self, x,y)

               return x*y

end

end

 

if somecondition==3 then – this case escapes from polymorphism since have the same signature that f in somecondition == 2, but I need this anyway.

MyClass.f = function (self, x,y)

               return x/1

end

end

 

 

Thanks in advanced

 

Marcello Chiuminatto E.