tuple not part of core language

[libxmoc]

On Monday, 19 January 2026 at 15:59:48 UTC, Serg Gini wrote:
> On Monday, 19 January 2026 at 15:53:45 UTC, DLearner wrote:
>> Hi
>> Is there some reason why tuples are not part of the core 
>> language (like, say, struct, which to me is v.similar) but has 
>> to be pulled in via ```import std.typecons;```?
>
> Just because it is not implemented by Timon in upstream D

You're confusing the issue. Timon's attempted PR did try to add 
tuples to core D, but it still pulled in runtime library code - 
that's exactly the problem. A language feature that depends on 
library code violates the clean separation: it's either core or 
library, not both. I hope it won't be accepted, tuples should be 
native to the language, meaning it should not depend on runtime 
code, the compiler should support that by default, just like 
`struct`.