From: "Mauricio Fernández" <batsman.geo@...>
Date: 2003-05-20T16:05:14+09:00
Subject: Re: Exceptions in initialize()?

On Tue, May 20, 2003 at 03:30:58PM +0900, Jack Twilley wrote:
> I'm very new to ruby, so please be gentle.
> 
> I have created a class and an initialize() method.  I would like an
> attempt to initialize() to fail if either an argument is not supplied
> or the supplied argument does not match a regular exponent.  The
> solution would appear to be to use an exception, but I cannot tell
> - From the documentation what happens if an exception is thrown from
> within an initialize() method and not caught.
> 
> I know I can "just try it", but I'm interested in knowing what's
> supposed to happen in that case.  I'm hoping that what is supposed to
> happen is that the new object is equal to nil, but I can't be sure of
> the defined behavior until it's defined.

>> class Foo; def initialize; raise "foo"; end; end
=> nil
>> a = Foo.new rescue nil
=> nil
>> a
=> nil

or

>> def Foo.new(*args)
>>   begin
?>     super(*args)
>>   rescue
>>     nil
>>   end
>> end
=> nil
>> a = Foo.new
=> nil


-- 
 _           _                             
| |__   __ _| |_ ___ _ __ ___   __ _ _ __  
| '_ \ / _` | __/ __| '_ ` _ \ / _` | '_ \ 
| |_) | (_| | |_\__ \ | | | | | (_| | | | |
|_.__/ \__,_|\__|___/_| |_| |_|\__,_|_| |_|
	Running Debian GNU/Linux Sid (unstable)
batsman dot geo at yahoo dot com

There are 3 kinds of people: those who can count & those who can't.
	-- Unknown source