BigInt -- a challenge for std.allocator

[Dicebot]

On Wednesday, 30 October 2013 at 12:39:18 UTC, Joseph Rushton 
Wakeling wrote:
> On 30/10/13 01:38, inout wrote:
>> This has almost nothing to do with an allocator.
>
> My impression was that std.allocator as-is was designed to 
> create a toolkit for developers to build different memory 
> management strategies into their applications.  Is there any 
> reason why that should exclude implementing ref-counting 
> approaches?

"memory allocation strategy" != "memory management strategy", 
though those can be possibly coupled. Ref-counting can be done on 
top of any allocation strategy that support deterministic 
deallocattion.