Comment on Activity Streams 2.0 CR

Hi all,

This is a formal comment on Activity Streams 2.0 CR from Ephox Corporation.
The comment applies to:
  https://www.w3.org/TR/activitystreams-core/
as of 22 September 2016.

Section 2, Serialization, states:
"If a property has an array value, the absence of any items in that array
MUST be represented by omitting the property entirely or by setting the
value to null."

Omitting an empty property makes sense, but we would not be happy with the
use of a null. Parsing JSON can be performed with less, and safer, code if
the null was replaced by an empty list, [].

Therefore, we suggest:
"If a property has an array value, the absence of any items in that array
MUST be represented by omitting the property entirely or by setting the
value to []."

Thank you.

Regards,
Dave
--
David Wood