From: Robert Dober <robert.dober@...>
Date: 2006-04-12T06:01:15+09:00
Subject: Re: Equivalent of Java static code block in Ruby?

------=_Part_10819_5593243.1144789271120
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

On 4/11/06, Wes Gamble <weyus@att.net> wrote:
>
> All,
>
> Is there a notion of a class level "static" code block in Ruby that
> would get executed whenever the class is loaded?  Basically the
> equivalent of Java's "static {...}" construct?
>
> I don't necessarily want to put this in an initialize method because
> it's just loading up static data from configuration files.
>
> Or do I have to put the code into an initialize method in my class and
> then guard it so that it's only executed once?
>
> Thanks,
> Wes
>
> --
> Posted via http://www.ruby-forum.com/.


Well unless I missunderstood this is an easy one

Part I
In order to execute something when the  class is loaded you just put it
there ;)
The attr_* methods are a good example, they are executed when the  class
statement is executed and their receiver is
of course the class itself.
So that would be like
   class Foo
        puts "#{self}Bar"
        @bar =3D "foo"
   ...

Part II
def statements are of course defining instance methods so what if we want
static methods (well there is no such thing), class methods
there are at least 3 options

...
    class << self
           def static

or
   def self.static

or
   def Foo.static # not sure if it works is a maintainence nightmare anyway
!!!

Hope that helps

Robert




--
Deux choses sont infinies : l'univers et la b=EAtise humaine ; en ce qui
concerne l'univers, je n'en ai pas acquis la certitude absolue.

- Albert Einstein

------=_Part_10819_5593243.1144789271120--