Why are some types from std not in the core of the language?

[max haughton]

On Friday, 10 June 2022 at 15:24:08 UTC, Paul Backus wrote:
> On Friday, 10 June 2022 at 14:24:06 UTC, zjh wrote:
>> On Friday, 10 June 2022 at 14:14:46 UTC, Paul Backus wrote:
>>
>>> No, it's because there's too much shared mutable state, and 
>>> not enough immutable objects and pure functions.
>>
>>
>> Can it be improved by splitting large `source files` into 
>> small files?
>> I think should refactor `'dmd'` aggressively.
>
> The size of the source files is not the problem.

Wouldn't hurt though.