From: Josh Cheek <josh.cheek@...>
Date: 2011-10-04T14:26:24+09:00
Subject: Re: Operator Overloading

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On Tue, Oct 4, 2011 at 12:11 AM, Thescholar Thescholar <
thescholar@hotmail.ca> wrote:

> Let's suppose I have a class like this one and then I create two
> objects:
>
> =-=-=-=-=-=-=-=-=-=-=-=
> class Point
>
>  def initialize
>    x = 5
>    y = 10
>    z = 25
>  end
>
> end
>
> a = Point.new
> b = Point.new
> =-=-=-=-=-=-=-=-=-=-=-=
>
> How do I do if I want to add a and b together to a new point called c?
> Example:
>
> c = a + b
>
> How exactly should I implement the operator overloading feature? So that
> x = 10, y = 20, z = 50. There are hardly any tutorial for this...
>
> Thank you!
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

class Point
  attr_accessor :x, :y, :z

 def initialize(x=5, y=10, z=25)
   self.x = x
   self.y = y
   self.z = z
 end

 def +(point)
   Point.new x+point.x, y+point.y, z+point.z
 end

 def inspect
   "(#{x}, #{y}, #{z})"
 end
end

a = Point.new
b = Point.new

a     # => (5, 10, 25)
b     # => (5, 10, 25)
a + b # => (10, 20, 50)

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