Binary data (ByteArray/ByteVector) proposal on public-script-coord
alex at dojotoolkit.org
Thu Nov 5 15:08:11 PST 2009
On Nov 5, 2009, at 2:48 PM, Maciej Stachowiak wrote:
> I pulled together a rough proposal for representing binary data in
> ECMAScript and posted it on public-script-coord. I think having this
> is important for many W3C specs, but it is probably best defined in
> ECMAScript. I'm posting a link here in case anyone is interested and
> is not on the public-script-coord mailing list yet:
Looks promising! A couple of thoughts:
* the middle-ground approach seems interesting, although having
them not be "real" arrays feels like we're just kicking the can down
the road WRT the large-ish number of things that could be thought of
as arrays but which don't act like them (NodeList, arguments, etc.).
* any thoughts on type conversions? what does this do/return?:
var bits = new Data("...");
var res = bits += "?";
will strings have a toData() protocol? Should other objects be
able to implement such a protocol? will there be a canonical byte
format for all strings in the language?
* given that Data are array-like things that have the property of
being packed (like arguments), maybe we're just missing a PackedArray
superclass in general that could help w/ the efficiency concerns
(irrespective of mutability).
* what do you think about a toArray() method?
* do you envision any provision for multi-dimensional Data
objects? E.g., <canvas> data.
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