On Tuesday, 21 February 2012 at 02:23:58 UTC, Andrei Alexandrescu
wrote:
On 2/20/12 7:02 PM, Juan Manuel Cabo wrote:
oops, sorry!! I just saw a post by someone named Jose. My
thousand apollogies!!
I got confused. It was your argument I meant to refer to -
adding info to the exception in flight.
Andrei
I'd implement this along these lines:
class WithErrorCode(E) : E {
int errorCode;
this(Args)(int err, Args args) { this.errorCode = err;
super(args); }
}
and add this wrapper where relevant. e.g. replace:
throw new FileNotFoundException(...);
with something like:
throw new WithErrorCode!FileNotFoundException(-1, ...);
This is a localized change that doesn't affect all uses of
exceptions and it remains type-safe. surely this is a better
solution than the hash table?
