No informative deed goes unpunished, especially (as in this case) if it has
contradictory normative implications! This was the lesson of ECMA-357 (E4X),
with its overdone informative prose which often contradicted the normative
prose.
/be
Sent from my iPad
> On Feb 21, 2014, at 3:29 PM, Allen
On Feb 21, 2014, at 3:16 PM, Brandon Benvie wrote:
> On 2/21/2014 3:08 PM, Allen Wirfs-Brock wrote:
>>> ```
>> Don't put too much weight into that. I've experiment with use the latter
>> style when define some new methods to see where it is helpfully more
>> descriptive. I just haven't bother t
On 2/21/2014 3:08 PM, Allen Wirfs-Brock wrote:
It might be worth coming up with good terms for "ES5-style optional
arguments" and "ES6-style optional arguments" which can be used
consistently in the spec. They can already be distinguished by
signature, ie:
```js
Array.prototype.reduce ( callba
On Feb 21, 2014, at 1:47 PM, C. Scott Ananian wrote:
> I wasn't confused by the spec text as is, but I'm not surprised that
> others are. The language is battling against two different "standards"
> for optional arguments. In ES5 typically "not present" is used; in ES6
> for consistency with the
I wasn't confused by the spec text as is, but I'm not surprised that
others are. The language is battling against two different "standards"
for optional arguments. In ES5 typically "not present" is used; in ES6
for consistency with the new language optional arguments, "undefined"
is treated as "not
On 2/20/14 12:24 PM, Allen Wirfs-Brock wrote:
Would you prefer it to say "If fewer than two arguments were passed, then let
deleteCount be ..."?
That would be clearer, yes, if we want to stick to natural language
here. It avoids confusion about undefined == missing issues, for sure,
and mak
On Feb 20, 2014, at 9:11 AM, Boris Zbarsky wrote:
> On 2/20/14 11:16 AM, Allen Wirfs-Brock wrote:
>> Nope, it means that the length of the argument list is less than two,
>> hence an argument corresponding to 'deleteCount' was not passed.
Would you prefer it to say "If fewer than two arguments w
On Thu, Feb 20, 2014 at 12:11 PM, Boris Zbarsky wrote:
> On 2/20/14 11:16 AM, Allen Wirfs-Brock wrote:
>
>> Nope, it means that the length of the argument list is less than two,
>> hence an argument corresponding to 'deleteCount' was not passed.
>>
>
> OK. In that case, I think this term _really
On 2/20/14 12:09 PM, Allen Wirfs-Brock wrote:
Boris should file a bug.
Done. https://bugs.ecmascript.org/show_bug.cgi?id=2559
Thanks,
Boris
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On 2/20/14 11:16 AM, Allen Wirfs-Brock wrote:
Nope, it means that the length of the argument list is less than two,
hence an argument corresponding to 'deleteCount' was not passed.
OK. In that case, I think this term _really_ needs to be defined.
Ideally with links to the definition whenever
On Feb 20, 2014, at 8:36 AM, Brendan Eich wrote:
> On Feb 20, 2014, at 8:16 AM, Allen Wirfs-Brock wrote:
>
>> Nope, it means that the length of the argument list is less than two, hence
>> an argument corresponding to 'deleteCount' was not passed.
>>
>> http://people.mozilla.org/~jorendorff/e
On Feb 20, 2014, at 8:16 AM, Allen Wirfs-Brock wrote:
>
> Nope, it means that the length of the argument list is less than two, hence
> an argument corresponding to 'deleteCount' was not passed.
>
> http://people.mozilla.org/~jorendorff/es6-draft.html#sec-ecmascript-standard-built-in-objects
>
On Feb 20, 2014, at 7:49 AM, Boris Zbarsky wrote:
> Consider
> http://people.mozilla.org/~jorendorff/es6-draft.html#sec-array.prototype.splice
> step 10. It uses the phrasing "if deleteCount is not present" but I can't
> find anything in the specification defining the concept of "present" or
Consider
http://people.mozilla.org/~jorendorff/es6-draft.html#sec-array.prototype.splice
step 10. It uses the phrasing "if deleteCount is not present" but I
can't find anything in the specification defining the concept of
"present" or "not present". So it's hard for me to tell what behavior
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