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IWETHEY Home / IWETHEY Board / Theory and Practice of Programming Forum / But he's saying that you should use both
Post #199,078
by drewk
Picture of drewk
3/16/05 5:18:00 PM
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New But he's saying that you should use both
Throw exceptions when it's a "serious problem" that should halt page execution. Return an error object when it's a "routine event" that can be handled in the calling code and continue.

It seems to me you can do both with exceptions.
===

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Post #199,091
by Arkadiy
Picture of Arkadiy
3/16/05 5:40:27 PM
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New My rule of thumb is,
when the return value has an obvious "error mode", such as returning "" for file name (or -1 for collection size), and when the error _must_ be handled by the caller, return a value. If either of those conditions is not met, throw an exception.
--


And what are we doing when the two most powerful nations on earth -- America and Israel -- stomp on the elementary rights of human beings?

-- letter to the editor from W. Ostermeier, Liechtenstein
Post #199,096
by admin
Picture of admin
3/16/05 6:04:02 PM
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New Pick one and stick with it.
I'd go with exceptions for the reasons that Robert gave.
Regards,

-scott anderson

"Welcome to Rivendell, Mr. Anderson..."
Post #199,097
by FuManChu
Picture of FuManChu
3/16/05 6:05:51 PM
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New You can do both (or more accurately: either) with or without
Exceptions break the normal flow of control (by propagating outward), and should therefore be used when you want to break flow. When you don't want to, use a return value. It's common to see either approach being abused, but it's rarely a deal-breaker.
     Question about exceptions - (drewk) - (31) - March 16, 2005, 04:22:29 PM EST
         Lots of discussions about that - (FuManChu) - (6) - March 16, 2005, 04:38:14 PM EST
             That only goes for one kind of exceptions! - (CRConrad) - (1) - March 16, 2005, 04:43:24 PM EST
                 What does the "checked" mean to you? - (FuManChu) - March 16, 2005, 05:55:46 PM EST
             But he's saying that you should use both - (drewk) - (3) - March 16, 2005, 05:18:00 PM EST
                 My rule of thumb is, - (Arkadiy) - March 16, 2005, 05:40:27 PM EST
                 Pick one and stick with it. - (admin) - March 16, 2005, 06:04:02 PM EST
                 You can do both (or more accurately: either) with or without - (FuManChu) - March 16, 2005, 06:05:51 PM EST
         Re: Question about exceptions - (JimWeirich) - (23) - March 16, 2005, 07:35:00 PM EST
             Nice point about responsibility, but grey areas abound - (FuManChu) - (11) - March 16, 2005, 07:46:02 PM EST
                 Re: Nice point about responsibility, but grey areas abound - (JimWeirich) - (10) - March 17, 2005, 03:30:15 PM EST
                     No, we don't - (drewk) - (9) - March 17, 2005, 05:25:32 PM EST
                         The difference is simple - (ben_tilly) - (8) - March 17, 2005, 05:57:25 PM EST
                             Problem with that - (drewk) - (4) - March 17, 2005, 06:13:50 PM EST
                                 See? Whether it is an error IS ambiguous! -NT - (ben_tilly) - (2) - March 17, 2005, 06:19:06 PM EST
                                     I think I know what to do then - (drewk) - (1) - March 17, 2005, 06:28:16 PM EST
                                         Exactly -NT - (ben_tilly) - March 17, 2005, 06:59:56 PM EST
                                 Re: Problem with that - (JimWeirich) - March 17, 2005, 11:59:18 PM EST
                             Thats the sort of logic that makes me wary of exceptions. - (static) - (2) - March 17, 2005, 08:18:40 PM EST
                                 Exceptions are one form of Continuation - (ChrisR) - (1) - March 17, 2005, 10:33:45 PM EST
                                     Icon's generators rely on the failure model. - (static) - March 18, 2005, 01:24:49 AM EST
             Disabling assertions - (ChrisR) - (3) - March 16, 2005, 07:52:17 PM EST
                 That's one of the points he raised - (drewk) - (2) - March 16, 2005, 08:59:04 PM EST
                     Expense is relative - (ChrisR) - March 16, 2005, 11:52:33 PM EST
                     Re: That's one of the points he raised - (JayMehaffey) - March 17, 2005, 08:31:12 AM EST
             DbC? -NT - (drewk) - (6) - March 16, 2005, 09:32:24 PM EST
                 Design by Contract - (Yendor) - (5) - March 16, 2005, 10:05:14 PM EST
                     Not the same thing. - (admin) - (4) - March 16, 2005, 10:31:01 PM EST
                         That's not strictly Eiffel; - (jake123) - (3) - March 17, 2005, 05:31:51 PM EST
                             It's built into Eiffel - (admin) - March 17, 2005, 06:01:57 PM EST
                             It is DESIGN by Contract after all - (JimWeirich) - (1) - March 17, 2005, 11:48:41 PM EST
                                 As you say - (jake123) - March 19, 2005, 03:09:19 AM EST

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