[Python-Dev] PEP 509: Add a private version to dict

[Greg Ewing]

Yury Selivanov wrote:
> What I propose is to add a pointer "ma_extra" (same 64bits),
> which will be set to NULL for most dict instances (instead of
> ma_version).  "ma_extra" can then point to a struct that has a
> globally unique dict ID (uint64), and a version tag (unit64).

Why not just use a single global counter for allocating
dict version tags, instead of one per dict?

-- 
Greg