From: Joel VanderWerf <vjoel@...>
Date: 2003-11-04T08:58:20+09:00
Subject: Re: exceptions

Simon Kitching wrote:
> Hi,
> 
> I'm puzzled about how to associate custom information with an Exception
> class I am throwing.
> 
> In Java, I would do this
> 
>   MyException e = new MyException("foo", "bar", "baz");
>   e.doSomething();
>   e.setWidget(widget);
>   // now e is all set up, so throw it
>   throw e;
> 
> Can this sort of thing be done in Ruby??

Yep:

class MyException < Exception
   def initialize(*args); @args = args; end
   def doSomething; end
   def setWidget(widget); @widget = widget; end
end

e = MyException.new("foo", "bar", "baz")
e.doSomething
e.setWidget("widget")
raise e