On 07/19/2013 02:02 AM, JS wrote:
> On Friday, 19 July 2013 at 08:08:27 UTC, John Colvin wrote:
>> On Friday, 19 July 2013 at 08:02:45 UTC, JS wrote:
>>> I have a template
>>>
>>> template T(alias t)
>>> {
>>> pragma(msg, t.stringof);
>>> .... other stuff ...
>>> }
>>>
>>> which I use in a class and pass fields/members to.
I read everything you wrote and came up with this:
template T(alias t)
{
pragma(msg, t.stringof);
}
class C
{
int i;
void foo()
{
mixin T!i;
mixin T!j;
}
}
void main()
{
auto c = new C();
}
>>> D complains that t does not have a this.
Hm... It does not do that for me.
> I guess it would be nice to assert a proper error if t doesn't exist
> rather than the error it gave.
That is exactly what dmd does:
Error: undefined identifier j, did you mean variable i?
> (I'm suppose to be passing it a field of
> a class so it should exist)
>
> Is there any way to test for "existance" of an alias?
Probably. But I suspect your code is something different from what I
understood.
Ali
