Question

I have this code:

def setVelocity (x, y, yaw)
  setVelocity (Command2d.new(x,y,yaw))
end
def setVelocity (vel)
......
end 

vel is a Command2D class that has 3 attributes, is Comparable and defines + , basically is a convenient class for me to manage those 3 attributes, so I want to use it internally in my library (dont want to make them private, either give them weird names).
But Ruby seems to keep only the last setVelocity even when the number of parameters is different. so when I call setVelocity with 3 parameters will say that I need to call that method with only one parameter.

Answer 1

Ruby doesn’t really support overloading.

This page gives more details and a workaround. Basically you create a single method with a variable number of parameters, and deal with them appropriately.

(I’d personally recommend writing one method to recognise the two different "faked overloads" and then one method for each overload, with different names reflecting the different parameters.)

Alternatively, just provide different names to start with 🙂