how do I check if a member of a T has a member ?

[John Colvin via Digitalmars-d-learn]

On Monday, 14 September 2015 at 14:05:01 UTC, Laeeth Isharc wrote:
> On Sunday, 13 September 2015 at 17:34:11 UTC, BBasile wrote:
>> On Sunday, 13 September 2015 at 17:24:20 UTC, Laeeth Isharc 
>> wrote:
>>> [...]
>>
>> can't you use 'hasMember' (either with __traits() or 
>> std.traits.hasMember)? It's more idiomatic than checking if 
>> it's compilable.
>
> I'll check again in a bit, but I seem to recall hasMember 
> didn't work.  I would like to get the type of a member of a 
> type, and I think hasMember!(T.bar.date","hour") didn't work 
> for that.  Possibly it does work and I messed it up somehow, or 
> it doesn't work and there is a more elegant way.

You mean hasMember!(typeof(T.bar.date), "hour"), right?