From: Carlos <angus@...>
Date: 2001-12-23T11:01:17+09:00
Subject: [ruby-talk:29334] Re: a better way?

>   class Temp
>     @@save = {}
>     def fahrenheit(c)
>       result = @@save[self] and return result
>       puts "Performing calculation...."
>       @@save[self] = c * 9 / 5 + 32
>     end
>   end
> 
>   t = Temp.new
> 
>   puts t.fahrenheit(100) # "Performing calculation....\n212"
>   puts t.fahrenheit(100) # "212"

    puts t.fahrenheit(300) # "212"

Ooohh!!
;)