Re: [Json] I-JSON Tpic #2: Top-Level

Tim Bray <tbray@textuality.com> Mon, 28 April 2014 20:20 UTC

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From: Tim Bray <tbray@textuality.com>
Date: Mon, 28 Apr 2014 13:20:31 -0700
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To: Matt Miller <mamille2@cisco.com>
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Subject: Re: [Json] I-JSON Tpic #2: Top-Level
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​Protocols with messages which are objects are better than other protocols,
because they are architecturally friendly to MustIgnore policies.

Allowing top-level JSON to be a primitive - true, null, 42​ - is batshit
crazy for anything the IETF might contemplate, and one of I-JSON’s main
virtues is ruling that out.

I don’t think top-level arrays are actively harmful at the same level, but
the MustIgnore is a pretty big value-add, forcing people to sort-of
future-proof themselves even when they haven’t realized why that’s a good
idea.

So I’d leave it object-only.


On Mon, Apr 28, 2014 at 12:50 PM, Matt Miller <mamille2@cisco.com> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA512
>
> "draft-i-json-01 says the top level is an object (but doesn’t say
> MUST, eek).  I have heard arguments for allowing arrays too."
>
> If you are in favor -- or not -- of restricting the top-level I-JSON
> text to only be object (or array / object), please respond to this
> thread with your reasoning.
>
>
> - --
> - - m&m
>
> Matt Miller < mamille2@cisco.com >
> Cisco Systems, Inc.
>
> * "How to Argue about I-JSON" <
> http://www.ietf.org/mail-archive/web/json/current/msg02775.html >
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