+= operator overloading in ruby

Question

class Fracpri
attr_accessor:whole, :numer, :denom, :dec, :flofrac
def initialize()
    puts \"Hey! It\'s an empty constructor\"
end
def getFraction(whole,numer,denom)
           


        

Answer 1

It is not possible to override =, nor variants such as +=. These are built in keywords and not methods such as +.

If you change your patch from def +=(obj) to def +(obj), you can still call r1 += r2 and it will have the same effect as if you'd patched +=. This is because += is calling your patched + method under the hood.

By the way, your + method doesn't actually return a value so any time you call += it will always result in nil .... but it seems like this is still a WIP so hopefully you can sort that bit out.