Path: csiph.com!aioe.org!news.mb-net.net!open-news-network.org!.POSTED.69.235.197.178.dynamic.wless.lssmb00p-cgnat.res.cust.swisscom.ch!not-for-mail
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: why the ! operator can be used to determine a string is null?
Date: Thu, 10 Aug 2017 03:44:52 +0200
Organization: PointedEars Software (PES)
Lines: 34
Message-ID: <2062468.ElGaqSPkdT@PointedEars.de>
References: <omcm6a$rga$1@gioia.aioe.org> <null-20170808165244@ram.dialup.fu-berlin.de> <slrnooju52.303.jon+usenet@sable.unequivocal.eu> <empty-string-20170808184854@ram.dialup.fu-berlin.de> <slrnoolr4r.303.jon+usenet@sable.unequivocal.eu> <XnsA7CCA5CE3CA47eejj99@194.109.6.166> <87zib8g4eb.fsf@bsb.me.uk> <10915888.O9o76ZdvQC@PointedEars.de> <877eycdzm9.fsf@bsb.me.uk>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
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Ben Bacarisse wrote:

> Thomas 'PointedEars' Lahn <PointedEars@web.de> writes:
>> Ben Bacarisse wrote:
> <snip>
>>> Further complicated by the fact that there is a character called null
>>> (sometimes Null, Nul or NULL) so a string can "be null" in that it
>>> contains just that character.
>> As we are talking about ECMAScript, it is the Unicode character U+0000
>> NULL (to my surprise, not “NUL” as in US-ASCII) whose standard
>> representation is a boxed “NUL” (AFAIK, it is *never* called “null”,
>> “Null” or “Nul”):
> 
> If you can find an original copy of the standard you'll see a table of
> control characters that gives "Abbreviations" (though most are acronyms)
> and, as you say, NUL is the abbreviation for the first one.  After that
> table is an explanation that gives the name as "Null" and the
> abbreviation as "Nul" (for some reason not in caps).

*I have just cited* “an original copy of the standard”, so please cite 
evidence supporting your claims.

> Since it's not a proper name, people write "null" for it just as they
                                ^^^^^^^^^^^^
> write "bell" for the character abbreviated as in the table as BEL.

Weasel wording.  People who do not know what they are talking about are 
irrelevant when one is faced with deciding the correctness of an answer
to a question.

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