[RFC] I/O and Buffer Range

[Kagamin]

On Thursday, 16 January 2014 at 15:55:07 UTC, Steven 
Schveighoffer wrote:
> I am thinking of this layout for streams/buffers:
>
> 1. Unbuffered stream used for raw i/o, based on a class 
> hierarchy (which I have pretty much written)
> 2. Buffer like you have, based on a struct, with specific 
> primitives. It's job is to collect data from the underlying 
> stream, and present it to consumers as a random-access buffer.

If you have a struct-based buffer, how would you enlarge the 
buffer? Won't it suffer from AA syndrome?