From: Lorenzo Brito Morales <lorenzo.brito@...>
Date: 2011-01-24T14:46:43+09:00
Subject: Re: class_eval

Ok, thanks, in that way what actually we are doing is a class method
not? a static called in java or csharp
but the thing i really feel very weird is these
class Class
def add_accessor(accessor_name)
self.class_eval %Q{
attr_accessor :#{accessor_name}
}
end
end
class Person
end
person = Person.new
Person.add_accessor :name
but why the method added to Class works on Person as class method ? if
it is added in Class as instance method ?

On Sun, Jan 23, 2011 at 11:29 PM, botp <botpena@gmail.com> wrote:
> On Mon, Jan 24, 2011 at 12:58 PM, Lorenzo Brito Morales
> <lorenzo.brito@gmail.com> wrote:
>>..., but i just want to the class Person was the only class whom have it.
>
> then just put it Person
>
> eg,
>
> class Person
>  def self.add_accessor accessor_name
>    self.class_eval %Q{
>    attr_accessor :#{accessor_name}
>    }
>  end
> end
> #=> nil
>
> person=Person.new
> #=> #<Person:0x871188c>
>
> Person.add_accessor :name
> #=> nil
>
> Person.add_accessor :gender
> #=> nil
>
> person.name="Peter Cooper"
> #=> "Peter Cooper"
>
> person.gender="male"
> #=> "male"
>
> person.name
> #=> "Peter Cooper"
>
> person.gender
> #=> "male"
>
> best regards -botp
>
>