Re: [boost] [review] Review of Exception begins today

From: Tobias Schwinger (tschwinger_at_[hidden])
Date: 2007-09-30 20:08:51

Emil Dotchevski wrote:
>> I'm not keen on the use of operator<< to add the data to the exceptions.
> 
> I do share your concern, but consider that whatever we use for boost
> exception should support easy composition, because it needs to work
> when used in a throw expression directly:
> 
> throw my_error() <<
>     error_info<tag_errno>(errno) <<
>     error_info<tag_name>(name);
> 
> Instead of << we could use .add:
> 
> throw my_error().
>     add(error_info<tag_errno>(errno)).
>     add(error_info<tag_name>(name));
> 
> This isn't bad, but in my opinion the << syntax is better despite my
> strong dislike for operator overloading.

Maybe a more or less obvious choice will do

    throw my_error() = error_info<tag>(whatever),
        error_info<another_tag>(something_else) // ...

Regards,

Tobias Schwinger
- Review Manager -