On Friday, 8 March 2013 at 20:32:23 UTC, Jonathan M Davis wrote:
On Friday, March 08, 2013 20:16:13 Rob T wrote:
If you know of a better way to implement an exception handler
in
D, then I'd like to know about it. For example I do know that
D's
system allows you to insert callback functions, but I don't yet
know how to make use out of it, so perhaps there's a better
way.
If all you need to do is do something when an exception is
thrown and don't
need the exception itself, then just use scope statements:
http://dlang.org/statement.html#ScopeGuardStatement
scope(failure) doSomethingOnException();
//code that might throw
The block inside the scope statement will run when the
surrounding scope is
exited with an exception. That _really_ cleans up a lot of code
that just
wants to react to the fact that an exception was thrown and not
actually do
anything with it.
- Jonathan M Davis
Yes, scope(...) does seem useful in certain situations.
In my case I need access to the information contained in the
Exception object so that I can log what kind of error occurred
and also whatever other details there are, and then perform a few
general operations such as possibly sending out a notification to
support staff.
I am thinking that perhaps a callback may do what I want, so
that's something I intend to look at more closely.
--rt
