fat struct style guide?

[Andy Valencia]

On Tuesday, 24 February 2026 at 16:45:30 UTC, H. S. Teoh wrote:
> Hmm.  So basically the idea is to stuff everything into a 
> single struct so that you keep everything in cache instead of 
> having to dereference pointers?

I read that claim, but a union with keyed type would also achieve 
(or outdo) the compactness and thus cache locality.  It seems 
like the flat layout of fields and its consequent streamlining of 
how to think about access is a big part of it.

Andy