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Message-ID: <30008540.2uy7m7UenZ@PointedEars.de>
From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Reply-To: Thomas 'PointedEars' Lahn <cljs@PointedEars.de>
Organization: PointedEars Software (PES)
Date: Sun, 14 Oct 2012 01:58:49 +0200
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Subject: Re: What's a good Javascript book?
Newsgroups: comp.lang.javascript
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Patricia Shanahan wrote:

> Thomas 'PointedEars' Lahn wrote:
>> Patricia Shanahan wrote:
>>> You seem to be confused about my position. I am not saying that no Block
>>> can be a Statement, just that a Block can be used in situations in which
>>> a Statement would not be accepted, and so is not always a Statement.
>> 
>> Ex falso quodlibet.  A Block (statement) *cannot* be used in situations
>> in which a Statement would not be accepted.  For example, the braces in
>> 
>>   function x (y)
>>   {
>>     
>>   }
>>  
>> are _not_ produced by /Block/, they are produced as part of
>> 
>> | FunctionDeclaration :
>> |   function Identifier ( FormalParameterListopt ) { FunctionBody }
>> 
>> The braces in
>> 
>>   var foo = {
>>     bar: 42
>>   };
>> 
>> are _not_ produced by /Block/ either, they are produced as part of
>> 
>> | ObjectLiteral :
>> |   { }
>> |   { PropertyNameAndValueList }
>> |   { PropertyNameAndValueList , }
>> 
>> (formerly, /ObjectInitialiser/, and a trailing comma was a syntax error).
> 
> Have you considered the TryStatement productions?

I have, and that is indeed a case where any other statement but a Block 
statement is not allowed.  However, that does not prove your argument,
only its premise.


PointedEars
-- 
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