From: shiwei zhang <shiwei1.zhang@...>
Date: 2006-11-14T19:53:58+09:00
Subject: Re: Getting initialization status from "foo = Class.new"

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Hi, Rodney,

       I wrote a small program for you, maybe it can meet your requirements.
I think you intended that your program flow could be controled directly by
"foo = Class.new" instead of other dedicated  variables like "@found" for
this purpose.
//////////////////////program commences///////////////////////
class ClassAndFileTest
    def initialize
        puts "shiwei zhang";
        #searching the file...........
        #if found the file
            ;
        #if did not find the file
            raise "file not found!";
    end
end

begin
     foo=ClassAndFileTest.new;
rescue
     #give error message
     puts $!;
     exit;
end
     # continue program
     puts "file found!";
     ............
/////////////////////////program concludes////////////////////////////

Rgds,
Shiwei

On 11/13/06, Rodney Brown <rodney.brown@knology.net> wrote:
>
> Here's a ruby noob question for ya:
>
> I have a class I've made that the initalize method searches for a file
> needed for the class to function.
>
> Right now, I've made a class variable, "found", that is set to true or
> false if the initialize method could or could not find the file.
>
> For example:
>
> foo = Class.new
>
> if foo.found == true
>    # continue program
> else
>    # give error message
> exit
>
> Is there a way for "Class.new" to signal failure?  I originally had the
> class's initialize method return true or false but this doesn't seem to
> be reflected in a "foo = Class.new" when trying it in irb.
>
> Using the class variable "found" works but shouldn't Class.new signal
> failure?
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

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