Binary data (ByteArray/ByteVector) proposal on public-script-coord
brendan at mozilla.com
Fri Nov 6 10:47:58 PST 2009
On Nov 6, 2009, at 5:43 AM, P T Withington wrote:
> On 2009-11-05, at 19:42, Maciej Stachowiak wrote:
>> My claim is that Data is not much like these things. I believe it
>> is more like String. It happens to be a sequence (of a very
>> specific type), but it's specialized enough to be worth treating
>> differently. Do people often regret that String is not an Array?
> Data is like an 8-bit "null encoded" String. Which makes me wonder
> if you really just want to extend String to allow different encodings.
Not for the Data use-cases.
Strings are used for binary data, which is tying our hands in
supporting UTF-16 properly. Separate issue but we should not
complicate String further IMHO.
> But I also regret String not being and Array.
I agree with Maciej that having mutating methods be no-ops or throwers
strongly suggests we not mix Array and String directly. Being able to
apply non-mutating Array methods to string (primitive, even) arguments
is ok. Splitting a string into an Array and mutating, then joining --
very ok. But I don't see why you want String to *be* (is-a) an Array.
> Others must have too, because at one point I'm sure there was a
> proposal to make  on string mean charAt?
David Flanagan beat me to it: in ES5 and most browsers.
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