From: David Alan Black <dblack@...>
Date: 2001-12-23T11:26:58+09:00
Subject: [ruby-talk:29339] Re: a better way?

Hi --

On Sun, 23 Dec 2001, HarryO wrote:

> On Sun, 23 Dec 2001 12:46:10 +1100, David Alan Black wrote:
>
>
> >   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"
>
> As usual, I'm probably missing something obvious here, but
> shouldn't the index used to access @@save be "c" rather than
> "self", in both cases?

You're not missing anything.  See my previous post (which introduced a
semblance of functionality to my original garbage, in a somewhat
different way).


David

-- 
David Alan Black
home: dblack@candle.superlink.net
work: blackdav@shu.edu
Web:  http://pirate.shu.edu/~blackdav