From: Nasir Khan <rubylearner@...>
Date: 2007-07-25T14:28:58+09:00
Subject: Refinement to facets/more/snapshot.rb

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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


- nasir

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