dereferencing null

[Andrej Mitrovic]

On 3/8/12, H. S. Teoh <hsteoh at quickfur.ath.cx> wrote:
> 	foreach (name; __traits(allMembers, typeof(obj))) {
> 		static if (__traits(compiles, &__traits(getMember, obj,
> 				name)))
> 		{
> 			alias typeof(__traits(getMember, obj, name))
> 				type;
> 			static if (is(type==function)) {
> 				// name refers to a function of type
> 				// 'type' here
> 			}
> 		}
> 	}
>
>> I've never had an easy time interacting with __traits.

Yesterday I've tried the same thing but it didn't work because I was
missing the &__traits call. With that in place, here's a very
hardcoded example of what you can do in D:

http://paste.pocoo.org/show/562933/

So now you can catch the exception if the object was uninitialized.
And you didn't have to modify the target class at all.