ass2_1submit.rb

class Numeric
  @@currencies = {'yen' => 0.013, 'euro' => 1.292, 'rupee' => 0.019}
  def method_missing(method_id)
    singular_currency = method_id.to_s.gsub( /s$/, '')
    if @@currencies.has_key?(singular_currency) #has_key checks whether or not that key is present in preceeding hash.
      self * @@currencies[singular_currency]
    else
      super
    end
  end
    def in(symb)
	slice_off=symb.to_s.gsub(/s$/,'')
	self/@@currencies[slice_off]
	end
	
end
p 1000.rupees
p 1000.rupees.in(:euros)
=begin
I want something like 5.dollars.in(:euros) and 10.euros.in(:rupees) to work
=end