Subject: Re: Number formatting: <xsl:number> vs. format-number() From: David_Marston@xxxxxxxxx Date: Thu, 13 Jul 2000 16:10:21 -0400 |
Ragnar Schierholz asks what could be a FAQ: >For some reason I get both the newly formatted and the original number >when I use the "format-number" function but only the newly formatted >number when I use <xsl:number>. Is this behaviour correct? You should be using xsl:number only to generate numbering on outputted items. Yes, <xsl:number value="number-expression" ...> is capable of applying some limited formatting to the expression IF that expression is a positive integer, but format-number() gives much better control. You can use xsl:number to format number-expressions into Roman numerals if you wish, and that might have been your intent in the example you gave, but as a general rule xsl:number is not the tool to format values stored in variables. You said format-number($combinationIndex,'I') in your example, but format-number uses formatting strings (second argument) that are more pictorial than the limited xsl:number vocabulary. One thing that both do is pass through non-magic strings, like so: format-number(12,'(##)') gives '(12)' <xsl:number value="12" format="(1)"/> gives '(12)' In both cases, the parentheses are non-magic and thus just come out as-is. But I is non-magic in format-number, so you were asking for return of a constant 'I' with nothing representing the value to be formatted! When using format-number(), plan on explicitly marking every decimal place, the decimal point, all commas, etc. Furthermore, notice that format-number() is a function that returns a string, so additional processing like use of other string functions can be applied. OTOH, xsl:number is an output instruction, just like xsl:value-of. .................David Marston XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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