[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: attribute order (RE: Syntax Sugar and XML information models)
- From: "Martin v. Loewis" <email@example.com>
- To: firstname.lastname@example.org
- Date: Fri, 30 Mar 2001 23:22:08 +0200
> Is there some kind of processing advantage for _parsers_ (not
> applications) to report attribute values in any sequence other than
> their original sequence?
Parsers can use dictionaries to report the attributes, which are more
efficient to access when given a key. Not sure whether this is a
processing advantage on the parser or on the application side, but it
should allow for faster overall processing.
Now, parsers could preserve the original order side-by-side with the
dictionary. In that case, not preserving the order simplifies the
implementation of the parser. Ordered dictionaries with efficient
lookup and insertion are rarely found as predefined types.