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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: Multidimensional arrays in javascript
Date: Fri, 04 Dec 2015 18:10:06 +0100
Organization: PointedEars Software (PES)
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John Harris wrote:

> On Fri, 04 Dec 2015 13:37:35 +0100, Thomas 'PointedEars' Lahn
> <PointedEars@web.de> wrote:

Attribution *line*, _not_ attribution novel.

>> John Harris wrote:
>>> Up to and including ECMAScript version 5.1 the answer is no : there is
>>> no such thing as a typed array.
>>> 
>>> In ECMAScript version 6 there are typed array objects of various
>>> types.
>> There are no ECMAScript versions.  To assume there were betrays a
>> fundamental misconception about ECMAScript-based programming languages.
> 
> The ECMAScript standard uses "edition"; the Unicode standards it
> references use "version".

Red herring.  The terminology in the Unicode standard is irrelevant in that 
regard.

> […]
> When talking to Jonas Thornvall we need to use words that he
> understands. I might have guessed wrong; you, Thomas, don't even try.

I just do not agree with your approach.  Communicating with people as if 
they were not intelligent keeps them ignorant and dependent.  By contrast,
I always assume that I address intelligent people who want to learn and to 
understand what they are doing.  So I strive to use proper terminology to 
begin with.

>   <snip>
>> Also, typed arrays had already been available in several implementations
>> before ECMAScript 2015/Edition 6 was finalized, voted on, and published;
>> those were implementations of the 5.1 Edition, and earlier, at the time.
> 
> Available in all the browsers used by his preferred audience?

I do not know the browsers used by his preferred audience: His postings 
appear to have not been distributed to the public news server that I am 
using, the quotations of his posting do not contain that information, and 
looking up his posting now would be illogical as I had killfiled him before.

>> The record shows that new Editions of the ECMAScript Language
>> Specification always codified already implemented behavior, attempting to
>> specify common features in existing implementations, and, by specifying
>> them differently or not at all, deprecating features in and behavior of
>> existing implementations that were unanimously considered unfavorable
>> within the Ecma Technical Committee (TC) 39.
>> See also the ECMAScript Support Matrix (“ES Matrix”) referenced in my
>> signature.
> 
> How does this help with old browsers that haven't been or can't be
> updated?

The dynamic nature of the languages allow for new features that are not 
built-in to be emulated.  That being said, one must consider carefully 
whether it really is a good idea to jump through hoops for browsers that do 
not receive security updates anymore.
 
> Why tell customers that they *must* use a new browser?

See above.  But I have not suggested to do that.  Instead, I had presented 
an approach recently that works even without native support for typed 
arrays.  And where Proxy is not available as well, typed arrays still can be 
emulated with explicit method calls, whereas a wrapper type can be devised 
and used that falls back to those in that case.  (The implementation of the 
latter is left as an exercise to the reader.)


JFYI: Since the “From” header field value of your postings, too, constitutes 
anti-social behavior, I have restored the corresponding filter rule to my 
scorefile which had been accidentally reset recently.  IOW, your follow-ups 
to my postings will neither be displayed by default, nor will I be notified 
of them, until you fix this.

See also: <http://www.interhack.net/pubs/munging-harmful/>

-- 
PointedEars
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