From: "Hal E. Fulton" <hal9000@...>
Date: 2002-06-22T13:20:18+09:00
Subject: What do you think of this idiom?

I was writing a little script which prompted 
the user for a directory. I wanted to repeat
until a valid directory was entered. 

At first I was going to write an actual loop.
Then I thought of this little technique. What 
do you think? How would you do it?

Cheers,
Hal Fulton


begin
  print "Dir = "
  mydir = gets.chomp
  dir = Root + mydir
  raise "No such directory" if not File.stat(dir).directory?
rescue => err
  puts err
  retry 
end