The Right Approach to Exceptions

[Jose Armando Garcia]

On Tue, Feb 21, 2012 at 6:32 PM, deadalnix <deadalnix at gmail.com> wrote:
> Le 21/02/2012 00:23, Andrei Alexandrescu a écrit :
>
>> On 2/20/12 4:44 PM, Juan Manuel Cabo wrote:
>>>
>>> HAhaha, it sometimes feel as though people are afraid that the
>>> Variant[string]
>>> idea is to never use plain old variables and never use exception
>>> subclasses. :-)
>>>
>>> On the contrary, the idea is so that plain old variables and exception
>>> subclasses
>>> can be created for the right reasons, and to remove cases where they need
>>> to be created for the wrong reasons.
>>
>>
>> Yah, I think there's a lot of confusion and consequent apprehension
>> regarding this. Thanks for attempting to clarify things.
>>
>> Andrei
>>
>
> So it doesn't help. Dulb subclasses of Exceptions are done mostly to be able
> to catch them. To avoid useless subclasses, we need a more precise way to
> catch Exception than the type only.
>

Agreed. I would love it if catch worked using a structural/pattern
matching mechanism. Something like template's if clause or like Scala
pattern matching...

-Jose
> This Variant[string] doesn't help.