From: botp <botpena@...>
Date: 2011-02-04T12:22:09+09:00
Subject: Re: Setter method for Hash value

On Fri, Feb 4, 2011 at 2:52 AM, Rolf Pedersen <rolfhsp@gmail.com> wrote:
> I'm trying to make getter and setter methods for a virtual hash property
> called props. Under the hood, the implementation calls external methods to retrieve or
> store the given values for a given key.

objects receive methods wc return objects, wc in turn can receive
another method,  and so fort on the chain..

eg,

class MyClass
  def props
    some_data = SomeClass::get_prop
  end
  def []=(key,value)
    SomeClass::set_prop(key, value)
  end
end
#=> nil

class SomeClass
  class << self
    @@h={}
    def get_prop
      @@h
    end
    def set_prop key,value
      @@h[key]=value
    end
    def show
      @@h
    end
  end
end
#=> nil

c=MyClass.new
#=> #<MyClass:0x888f6b4>
c.props
#=> {}
c.props[:a]=1
#=> 1
c.props[:b]=2
#=> 2
c.props
#=> {:a=>1, :b=>2}
SomeClass::show
#=> {:a=>1, :b=>2}


best regards -botp