Ruby error handling similar to Perl

Question

In Perl I handle errors with:

eval{
     };
if($@) {
     }

In Ruby I have used:

 begin
 rescue Exception => e
 sleep 2
 end

Is this correct way to do in Ruby, and will this work if the Internet or a server goes down? If the above is wrong are there any ways of doing it in Ruby similar to Perl?

Side note regarding perl `eval {};` http://stackoverflow.com/a/4006339/223226 — mpapec, Dec 19 '14 at 11:55

score 2 · Answer 1 · edited Dec 19 '14 at 21:00

If you need to rescue from a possible exception, you got it right. You have to:

begin
  # do some useful but dangerious work
rescue StandardError => e
  # something went wrong, try to work around it;
  # object "e" containts usefull error information
ensure
  # anyway, cleanup after doing what you've started
end

P.S. If the server goes down literally (e.g. the hardware is off) – no exception code-handling will help you out.

P.P.S. The Internet probably won't go down anytime soon.

Ruby error handling similar to Perl

1 Answers1