irb initialization file

.irbrc

require "irb/completion"
require "irb/ext/save-history"

IRB.conf[:SAVE_HISTORY] = 500
IRB.conf[:HISTORY_FILE] = ENV['HOME']+'/.irb_history'

if ENV["TS_SERVER"]
  begin
    require "drb"
    require "rinda/rinda"
    $ts = Rinda::TupleSpaceProxy.new(DRbObject.new_with_uri(ENV["TS_SERVER"]))
  rescue Exception
  end
end

module Enumerable
  def sum(origin = 0)
    inject(origin) do |s, i| s + i end
  end

  def avg(origin = 0)
    sum(0).to_f / size
  end
end

class Object
  def eigenclass
    class << self; self; end
  end
end