On 2/20/12 3:14 PM, deadalnix wrote:
Le 20/02/2012 22:05, Andrei Alexandrescu a écrit :
On 2/20/12 2:31 PM, Juan Manuel Cabo wrote:
...
Sure. Again, this is not advocating replacement of exception
hierarchies with tables!
...
Andrei
I think that the case of rethrowing an exception with added detail is
the worst
enemy of clean Exception hierarchies.
The idea of Variant[string] remedies that case without creating a new
exception
class just for the added fields. If that case is solved, then the
tipical need
for creating new exception types that don't really aid selecting them
for
catching and recovery is solved too.
Good point. One thing somewhat particular to D, you can always throw a
new exception linked to the current one.
And this is great design.
I'm not so sure. It's more like an incompetent design by someone who
obviously knew nothing about exceptions.
We should continue in that direction.
That has its own disadvantages, particularly the proliferation of types
simply to embody state, but it does work.
Andrei
