Class: Object

Inherits:
BasicObject
Defined in:
lib/rub/r/tool.rb

Overview

From: blade.nagaokaut.ac.jp/cgi-bin/scat.rb/ruby/ruby-list/43424

Instance Method Summary collapse

Instance Method Details

#deep_clone ⇒ Object

Recursively clone an object.



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# File 'lib/rub/r/tool.rb', line 72

def deep_clone
  return @deep_cloning_obj if @deep_cloning
  @deep_cloning_obj = clone
  @deep_cloning_obj.instance_variables.each do |var|
    val = @deep_cloning_obj.instance_variable_get(var)
    begin
      @deep_cloning = true
      val = val.deep_clone
    rescue TypeError
      next
    ensure
      @deep_cloning = false
    end
    @deep_cloning_obj.instance_variable_set(var, val)
  end
  deep_cloning_obj = @deep_cloning_obj
  @deep_cloning_obj = nil
  deep_cloning_obj
end