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Message-ID: <1946200.aqSPkdTlGX@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Sat, 28 Jan 2012 21:17:21 +0100
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Subject: Re: Comparing arraies
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John G Harris wrote:

> Thomas 'PointedEars' Lahn wrote:
>> John G Harris wrote:
>>> Thomas 'PointedEars' Lahn wrote:
>>>> Thomas 'PointedEars' Lahn wrote:
>>>>> Instead of the `==' operator, the `===' operator may be used as well,
>>>>> but it is neither supposed to add efficiency nor would it add
>>>>> expressive power (both arguments are of the same type), while it
>>>>> certainly reduces the backwards-compatibility of the entire code.
>>>> _Operands_, not arguments.  We are not talking about a function, but
>>>> about an operator.
>>> Operators are also functions. How else would + be defined?
>> You are confusing functions with algorithms.  The subject of discussion
>> here is the syntax of the programming language, not the implementation of
>> the syntax.
> 
> 1. The syntax specification calls new a keyword and + a punctuator

No, the _lexical grammar_ of ECMAScript (Ed. 5.1) says that `new' is a 
keyword (section 7.6.1.1), and that `+' is a punctuator (section 7.7).

The _syntactic grammar_ calls `new' and `+' operators, as in "11.2.2 The 
`new' Operator" and "11.6.1 The Addition operator (+)".

"Productions of the lexical and RegExp grammars are distinguished by having 
two colons “::” as separating punctuation. […]" (section 5.1.2, last 
paragraph).

> Their operands/arguments are called expressions.

Correct for "operands", in the syntactic grammar.  Operators do not have 
arguments; functions (and by extension to OOP, methods) have them.

> So we aren't discussing the syntax.

Yes, we are.  `+' is an operator in the syntax of ECMAScript; it has 
operands.

> 2. In a language where you write add(2,3) what would you call 2 and 3 :
> operands or arguments?

I get it now: you are trolling again.

> All that's special about operators is that they are often invoked using
> a non-general format, and they tend to be built into the language.

Wrong.


PointedEars
-- 
var bugRiddenCrashPronePieceOfJunk = (
    navigator.userAgent.indexOf('MSIE 5') != -1
    && navigator.userAgent.indexOf('Mac') != -1
)  // Plone, register_function.js:16