[XSL-LIST Mailing List Archive Home]
[By Thread]
[By Date]
At 2010-02-04 09:29 +0000, Andrew Welch wrote:
Not a problem, Andrew ... I get asked about this terminology in the classroom.
Nope ... a string literal is "literally a string in the stylesheet" written with string delimiters. The term "literal" here is in reference to the XPath written syntax.
A sequence of strings is just that: a sequence of string values in memory.
A literal string in the stylesheet is just that: a string value literally delimited in the stylesheet. See production 74 of the XPath syntax:
http://www.w3.org/TR/2007/REC-xpath20-20070123/#doc-xpath-StringLiteral
The difference is a syntax issue: a string literal is a type of primary expression (production 41) written in the stylesheet syntax and it is the way to represent a string value in the XPath syntax different from the representations of other literal values.
I hope that clarifies the distinction.
. . . . . . . . . . Ken
Re: [xsl] are all strings in a sequence valid potential QNames
|
Subject: Re: [xsl] are all strings in a sequence valid potential QNames From: "G. Ken Holman" <gkholman@xxxxxxxxxxxxxxxxxxxx> Date: Thu, 04 Feb 2010 10:37:20 +0100 |
At 2010-02-04 09:29 +0000, Andrew Welch wrote:
>> Could you do a fn:prefix-from-QName($x) = fn:in-scope-prefixes(.) >> check before doing the castable as check? > > Nope: > > http://www.w3.org/TR/2007/REC-xpath20-20070123/#id-castable > "[if] the input argument of the expression is of type xs:string but it is > not a literal string, the result of the castable expression is false."
To help me understand that :-)
Not a problem, Andrew ... I get asked about this terminology in the classroom.
can you provide an example of a user constructed string that is not a string literal?
For example, tokenizing a string into a sequence of strings... they are all string literals aren't they?
Nope ... a string literal is "literally a string in the stylesheet" written with string delimiters. The term "literal" here is in reference to the XPath written syntax.
A sequence of strings is just that: a sequence of string values in memory.
A literal string in the stylesheet is just that: a string value literally delimited in the stylesheet. See production 74 of the XPath syntax:
http://www.w3.org/TR/2007/REC-xpath20-20070123/#doc-xpath-StringLiteral
The difference is a syntax issue: a string literal is a type of primary expression (production 41) written in the stylesheet syntax and it is the way to represent a string value in the XPath syntax different from the representations of other literal values.
I hope that clarifies the distinction.
. . . . . . . . . . Ken
-- XSLT/XQuery/XPath training after http://XMLPrague.cz 2010-03-15/19 XSLT/XQuery/XPath training: San Carlos, California 2010-04-26/30 Vote for your XML training: http://www.CraneSoftwrights.com/s/i/ Crane Softwrights Ltd. http://www.CraneSoftwrights.com/s/ Training tools: Comprehensive interactive XSLT/XPath 1.0/2.0 video Video lesson: http://www.youtube.com/watch?v=PrNjJCh7Ppg&fmt=18 Video overview: http://www.youtube.com/watch?v=VTiodiij6gE&fmt=18 G. Ken Holman mailto:gkholman@xxxxxxxxxxxxxxxxxxxx Male Cancer Awareness Nov'07 http://www.CraneSoftwrights.com/s/bc Legal business disclaimers: http://www.CraneSoftwrights.com/legal
| Current Thread |
|---|
|
| <- Previous | Index | Next -> |
|---|---|---|
| Re: [xsl] are all strings in a sequ, Andrew Welch | Thread | Re: [xsl] are all strings in a sequ, Andrew Welch |
| Re: [xsl] are all strings in a sequ, Andrew Welch | Date | Re: [xsl] are all strings in a sequ, Andrew Welch |
| Month |