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Re: Subject: One-based indexes in XPath

Subject: Re: Subject: One-based indexes in XPath
From: "John Cavalieri" <john.cavalieri@xxxxxxxxx>
Date: Wed, 21 May 2008 12:55:35 -0500
 Re: Subject: One-based indexes in XPath
For processing content, one-based makes a lot of sense.


Do I select the zero chapter or the first chapter?

For arrays it is neither here nor there.  Javascript, Java, C++,
CSharp use zero-base notation because they all borrow their syntax
from C.

John Cavalieri

>From: Justin Johansson <procode@xxxxxxxxxxx>
>Subject: One-based indexes in XPath
>Trusting this question is relevant to the XSL List.
>Would someone please give me advice as to why "1-based" indexes are used in
>XPath, such as para[1] instead of para[0] for the first para item/element?
>Why does the spec for XPath (and its/XQuery operator/function library) go
>against the norm for modern programming languages in which zero is the base
>for array-like collections?
>The reason for my question is to do with reconciling XPath and XSLT with an
>implementation in Javascript in which zero is the base index for arrays.
>My users may well be perplexed by having to decide whether an index number
>is in XPath/XSLT-world or Javascript-world.
>Thanks for comments,
>Justin Johansson

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