static map as a type function
Andrei Alexandrescu
SeeWebsiteForEmail at erdani.com
Thu Sep 24 14:03:32 UTC 2020
On 9/24/20 8:58 AM, Steven Schveighoffer wrote:
> On 9/24/20 6:12 AM, Timon Gehr wrote:
>> On 24.09.20 07:13, Andrei Alexandrescu wrote:
>>>
>>> A few comments:
>>>
>>> * Currently mixin closes the circle by taking back the typeid to the
>>> type it started from. It would be nice to have something better, e.g.
>>> t.Type would just be the type.
>>
>> https://issues.dlang.org/show_bug.cgi?id=9945
>
> Hm... so I'm guessing TypeInfo.Type or __traits(typeFromId) would only
> work for CTFE?
Affirmative - wouldn't make sense otherwise as you could create (or
receive) such an object dynamically.
> That sounds interesting. Could be a different way to implement type
> functions, without requiring a new mechanism of passing type data. And
> there is the potential (I think) of making functions that are only type
> functions for CTFE, and can do something different if used at runtime
> (via __ctfe).
<nod>
One nice thing it would do is unify CTTI with RTTI. There's a lot of
unused potential in the run-time use of TypeInfo that I'll discuss at a
later time.
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