From: Trans <transfire@...>
Date: 2007-07-25T14:49:50+09:00
Subject: Re: Refinement to facets/more/snapshot.rb



On Jul 25, 1:28 am, "Nasir Khan" <rubylear...@gmail.com> wrote:
> Suggestion for facets library snapshot.rb
>
> Consider adding optional fields argument to both take_snapshot() and
> restore_snapshot() to selectively take snapshot of selected fields as
> against all fields which is the default.
> Patch provided below over 1.8.54 : methods changes take_snapshot and
> restore_snapshot for Object only.
>
> # = snapshot.rb
>
> class Object
>   def take_snapshot(fields=nil)
>     snap = Hash.new
>     fields = instance_variables unless fields
>     fields.each do |iv|
>       snap[iv] = instance_variable_get(iv)
>     end
>     snap
>   end
>
>   def restore_snapshot(snap, fields=nil)
>     fields = instance_variables unless fields
>     fields.each do |iv|
>       instance_variable_set(iv, snap[iv])
>     end
>   end
> end

Good idea.

BTW, there's a Facets mailing list now. You can sign up via Rubyforge
or Google Groups.

  http://rubyforge.org/mail/?group_id=804
  http://groups.google.com/group/facets-universal?lnk=li

Thanks!
T.