On 10/6/14, 12:27 AM, Walter Bright wrote:
On 10/5/2014 10:09 AM, Dicebot wrote:
On Sunday, 5 October 2014 at 17:03:07 UTC, Andrei Alexandrescu wrote:
On 10/5/14, 9:42 AM, Dicebot wrote:
On Sunday, 5 October 2014 at 16:30:47 UTC, Ola Fosheim Grøstad wrote:
Does D have exception chaining?
Yes. http://dlang.org/phobos/object.html#.Throwable.next
Though it seems to do more harm then good so far.
What harm does it do? -- Andrei
Good chunk of issues with pre-allocated exceptions (and possible
cycles in
reference counted ones) comes from the chanining possibility. At the
same time I
have yet to see it actively used as a feature.
Doesn't mean it is bad thing, just not used wide enough to compensate for
trouble right now.
FWIW, I'm skeptical as well of the value of chaining relative to its
cost in complexity.
It's one of those designs in which there's little room to turn. We
wanted to (a) allow destructors to throw, (b) conserve information.
Offering access to all exceptions caught was a natural consequence. --
Andrei
