From: Paolo Negri <hungrylist@...>
Date: 2006-08-11T01:37:18+09:00
Subject: Re: good writing in Ruby...

Some more infos about what are the relations among the User class and
the roles array would be nice.

Anyway you can easily rewrite your role= method of the User class to
something like this

def role=(value, array)
    self.role = array.delete value if array.member? value
end

or, if you are happy to end up with a role of nil in case the role is
invalid/already given away

def role=(value, array)
  self.role = array.delete value
end


On 10/08/06, Josselin <josselin@wanadoo.fr> wrote:
> I know I can write it the 'ugly common way' (loop)
> but I'd like to see how it can be done the Ruby way ... (I am a newbie...)
>
> here is an array
> roles = [ "a", "b", "c", "d", "e" ]
>
> Depending upon a variable 'user.role',
> I would like to  suppress all elements in the array , less or equal to
> this variable
>
> ex :
> user.role = "a"    #=> roles = ["b", "c", "d", "e" ]                    "a" deleted
> user.role = "b"    #=> roles = ["c", "d", "e" ]                 "a", "b"  deleted
> user.role = "c"    #=> roles = [ "d", "e" ]                     "a", "b", "c" deleted
> user.role = "d"    #=> roles = [ "e" ]                                  "a", "b", "c", "d"  deleted
> user.role = "e"    #  do nothing
>
> thanks for your tips
>
> Joss
> (I am on my way to buy the Ruby Recipes PDF Cookbook...)
>
>
>