DIP33: A standard exception hierarchy

[Lars T. Kyllingstad]

On Wednesday, 3 April 2013 at 14:11:09 UTC, Steven Schveighoffer 
wrote:

> The problem I have with this whole scheme of one class per 
> error type is, you inevitably cannot cover everyone's use case, 
> so they end up having to catch a base class and then doing the 
> work to figure out what it is manually.

Precisely.  And then, a switch over an enum is both way more 
efficient and more readable than a bunch of ifs and casts.

Lars