Container wont contain! (noob question)

ruby-talk
1

Here I want to change Class1's var2 to equal 2. Now, I can do this by..
"object.m_container.container1 = Class1.new(2)", but I want to do it
with "object.change_me = 2"
Point is I want to change that variable by simply using a number, as
apposed to xxx.new(arg).
Why wont object.change_me =2 work?

(sorry if this seems confusing or silly)

The following is a highly simplified representation of my current
problem....

···

#******************************************************************

class Class1

    def initialize(aVar)
        @var = aVar
        @var2 = nil
        if @var == 1 then @var2 = 1 elsif @var == 2 then @var2 = 2 end
    end
end

class Class2
      attr_accessor :container1

      def initialize(container1)
        @container1 = container1
           end
end

class M_class
  attr_accessor(:m_container,:change_me)

  def initialize
    @m_container = Class2.new(Class1.new(change_me) )
  end

        def change_me
               @change_me = 1
        end
end

object = M_class.new

#object.m_container.container1 = Class1.new(2) <--- currently doing it
like this

#object.change_me = 2 <----- want to do it like this (or something as
easy)

p object

#*******************************************************
--
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2

MMH... you can try add this function to M_class

       def change_me=(val)
              @m_container.container1 = Class1.new(val)
       end

and then call

object.change_me = 2

Sandro

···

On Sun, May 11, 2008 at 8:22 PM, Extreme Noob <bengalyean@hotmail.com> wrote:

Here I want to change Class1's var2 to equal 2. Now, I can do this by..
"object.m_container.container1 = Class1.new(2)", but I want to do it
with "object.change_me = 2"
Point is I want to change that variable by simply using a number, as
apposed to xxx.new(arg).
Why wont object.change_me =2 work?

(sorry if this seems confusing or silly)

The following is a highly simplified representation of my current
problem....

#******************************************************************

class Class1

   def initialize(aVar)
       @var = aVar
       @var2 = nil
       if @var == 1 then @var2 = 1 elsif @var == 2 then @var2 = 2 end
   end
end

class Class2
     attr_accessor :container1

     def initialize(container1)
       @container1 = container1
          end
end

class M_class
attr_accessor(:m_container,:change_me)

def initialize
   @m_container = Class2.new(Class1.new(change_me) )
end

       def change_me
              @change_me = 1
       end
end

object = M_class.new

#object.m_container.container1 = Class1.new(2) <--- currently doing it
like this

#object.change_me = 2 <----- want to do it like this (or something as
easy)

p object

#*******************************************************
--
Posted via http://www.ruby-forum.com/\.

--
Go outside! The graphics are amazing!

3

Extreme Noob wrote:

Here I want to change Class1's var2 to equal 2. Now, I can do this by..
"object.m_container.container1 = Class1.new(2)", but I want to do it
with "object.change_me = 2"
Point is I want to change that variable by simply using a number, as
apposed to xxx.new(arg).
Why wont object.change_me =2 work?

(sorry if this seems confusing or silly)

The following is a highly simplified representation of my current
problem....

#******************************************************************

class Class1

    def initialize(aVar)
        @var = aVar
        @var2 = nil
        if @var == 1 then @var2 = 1 elsif @var == 2 then @var2 = 2 end
    end
end

class Class2
      attr_accessor :container1

      def initialize(container1)
        @container1 = container1
           end
end

class M_class
  attr_accessor(:m_container,:change_me)

  def initialize
    @m_container = Class2.new(Class1.new(change_me) )
  end

        def change_me
               @change_me = 1
        end
end

object = M_class.new

#object.m_container.container1 = Class1.new(2) <--- currently doing it
like this

#object.change_me = 2 <----- want to do it like this (or something as
easy)

p object

#*******************************************************

That's pretty confusing. How about this:

class Class1
  attr_accessor :var2

  def initialize(aVar)
    @var = aVar
    @var2 = nil

    if @var == 1
      @var2 = 1
    elsif @var == 2
      @var2 = 2
    end
  end

end

class Class2
  attr_accessor :container1

  def initialize(container1)
    @container1 = container1
  end

end

class M_class
  attr_accessor :m_container

  def initialize
    @m_container = Class2.new(Class1.new(1) )
  end

  def set_var2=(val)
    @m_container.container1.var2 = val
  end

  def get_var2
    @m_container.container1.var2
  end

end

obj = M_class.new
obj.set_var2 = 2

puts obj.get_var2

···

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4

Wow, didn't know about that =() function. Thanks for the help

Sandro Paganotti wrote:

···

MMH... you can try add this function to M_class

       def change_me=(val)
              @m_container.container1 = Class1.new(val)
       end

and then call

object.change_me = 2

Sandro

--
Posted via http://www.ruby-forum.com/\.

5

Extreme Noob wrote:

Wow, didn't know about that =() function. Thanks for the help

Look at this class:

class Dog
  def initialize(name)
    @name = name
  end

  def name=(a_name)
    @name = a_name
  end

  def name
    return @name
  end
end

d = Dog.new("Spot")
puts d.name

d.name = "Rover"
puts d.name

The Dog class above is equivalent to:

class Dog
  attr_accessor :name

  def initialize(name)
    @name = name
  end

end

In other words, the line:

attr_accessor :name

creates the methods "name=" and "name" for you.

···

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