On Tuesday, 17 September 2019 at 14:33:30 UTC, Brett wrote:
The idea is to basically use a dynamic array for most of the items, then an array to get the rest.

T[] Base;
T[int] Rest;

Then if Base has a max size(usually it might be fixed due to some algorithm) the Rest AA can pick up any outside values easily.

The idea here is to be able to combine them as one "infinite" array of T.

Any indexing outside of Base gets carried in to Rest.

Now the question is, is there any way to wrap all this in to dynamic array semantics easily?

You can create a wrapper type for this that supports indexing, slicing, etc. using D's operator overloading:

https://dlang.org/spec/operatoroverloading.html

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