Creating a pointer/slice to a specific-size buffer? (Handing out a page/frame from a memory manager)

[Gavin Ray]

On Friday, 13 January 2023 at 19:16:17 UTC, H. S. Teoh wrote:
> On Fri, Jan 13, 2023 at 08:31:17AM -0800, Ali Çehreli via 
> Digitalmars-d-learn wrote:
>> On 1/13/23 07:07, Gavin Ray wrote:
>> 
>> > This is "valid" D I hope?
>> 
>> Yes because static arrays are just elements side-by-side in 
>> memory. You can cast any piece of memory to a static array 
>> provided the length and alignment are correct.
> [...]
>
> Or to be more precise, cast the memory to a *pointer* to a 
> static array of the right size.  Static arrays are by-value 
> types; passing around the raw array will cause the array to be 
> copied every time, which is probably not what is intended.
>
>
> T

Thanks Teoh and Ali, I wound up passing a pointer to a static 
array.

If anyone is curious, here's the full WIP implementation -- it's 
for a toy database (Postgres-like) I'm writing for a hobby and 
learning project:

https://ldc.godbolt.org/z/Kvh7dv96c