[Cbor] Consolidated set of tags for map-like entities

[Emile Cormier <[e-mail]>]

Hi Everyone,

I've been corresponding privately with Prof. Bormann about a new tag I
proposed for encoding multimaps as arrays or pairs. He's made me aware of
your recent discussion about another proposed tag for encoding "ordered"
maps, where the insertion order must be preserved. Carsten has indicated to
me his desire to consolidate all of these map-related tags together.

I would like to contribute to this endeavor of consolidating map-related
tags. To get the discussion started, I would like to share with you a draft
proposal I've written to serve as a starting point:
https://github.com/ecorm/cbor-map-like

Here's a brief summary:

This document proposes a consolidated set of CBOR tags for map-like
> entities involving key-value pairs. These tags encode the following
> meta-data concerning map-like entities:
>
>    - the homogeneity of the key and value types,
>    - the preservation of the insertion order of the key-value pairs,
>    - the uniqueness of the keys, and,
>    - the major type used to encode the key-value pairs.
>
> My interest in CBOR stems from my work on a new C++ serialization library
that can support any JSON-like encoding. This library is closed source for
now, but I may be able to convince my employer to make it open source in
the future.

I'm also involved with the WAMP protocol, which allows CBOR as one of its
encodings.

I'm looking forward to collaborating with you and I hope that we can come
to a solution that satisfies everyone's needs.

Cheers,
Emile Cormier