class CalcController < ApplicationController
	def first_time
		session[:selected_item]=0
    session[:aritmetic] =''
    redirect_to :action => "index"  
  end
  def designers
'Co-Designer:<a href
="http://www.harshshridhar.wordpress.com/">Harshendu
Shridhar</a>'
	end
  def get_title
  	'Calculator'
  end
	def get_separator
		'|'
	end
	def start_choices
		['1|2|3|','4|5|6|7|','8|9|0',
                      '+|-|*|/|']
	end
	def selected(str)
  	session[:arithmetic]<<str
	end
	def extras
		@a=session[:arithmetic]
		if session[:arithmetic] =~ /\D/
	  	begin
   			@a=session[:arithmetic]+"="+
					eval(session[:arithmetic]).to_s
   		rescue Exception                    
			end
		end
  end
  def backspace
    session[:arithmetic]=""
    redirect_to :action => "index"
  end
end