Reimplementing the bulk of std.meta iteratively

[Andrei Alexandrescu]

On 9/26/20 5:16 PM, Timon Gehr wrote:
> On 26.09.20 18:18, Andrei Alexandrescu wrote:
>>
>> Most implementations are a few lines long because they get to leverage 
>> algorithms as implemented in std. Here's a typical one:
>>
>> alias MostDerived(Args...) = dereify!({
>>      auto ids = reify!Args;
>>      sort!((a, b) => is(dereify!a : dereify!b))(ids);
>>      return ids;
>> }());
> 
> I am pretty sure this one does not work though.

Oops, Steve just told me it doesn't have any unittests. So it may as 
well not be working. Research goes on.