DIP19: Remove comma operator from D and provision better syntactic support for tuples

[David Nadlinger]

On Wednesday, 26 September 2012 at 12:20:56 UTC, Dmitry Olshansky 
wrote:
> On 25-Sep-12 23:29, kenji hara wrote:
>> My suggestion is very simple.
>> 1. Change all words "built-in tuple" in the documentation to 
>> "built-in
>> sequence". Then, in the D language world, we can have clarify 
>> name for
>> the built-in one.
>> 2. Introduce new templates, Seq, TypeSeq, and ExpSeq.
>>
>>     template Seq(T...) { alias T Seq; }    // identical with
>> std.typetuple.TypeTuple
>>     template TypeSeq(T...) if (allSatisfy!(isType, T)) { alias 
>> T TypeSeq; }
>>     template ExpSeq(T...) if (allSatisfy!(isExpression, T)) { 
>> alias T ExpSeq; }
>>
>>   If you really want to a sequence with heterogeneous 
>> elements, use
>> Seq template. Otherwise use TypeSeq or ExpSeq based on your 
>> purpose.
>>
> vote++;

vote++.

(This is also what would be in my never finished std.meta 
proposal – interesting how we seem to converge towards the same 
solutions in the metaprogramming space…)

David