From: Patrick Gundlach <clr8.10.randomuser@...>
Date: 2005-10-26T02:07:02+09:00
Subject: Re: Comparing Classes with Case ?



> Just throwing in that it would not be a "BIG LOSS", not even a _big
> loss_ or a big loss, because you nearly never should test for the
> class of an object.

Well, is the following the rare case of 'nearly never' or just
stupidity?


--------------------------------------------------
#!/opt/ruby/1.8/bin/ruby -w

class AnonUser        ; end
class RegularUser <  AnonUser    ; end
class Developer   <  RegularUser ; end
class Guru        <  Developer   ; end
class Sysop       <  Guru        ; end

brian=Guru.new

# ...

if Developer===brian
  puts "ok, you are Developer"
end
if Sysop===brian
  puts "you may shutdown the server"
end
--------------------------------------------------

# -> ok, you are Developer


Patrick