Function sum() sums all values of a sequence. All items of the sequence must be transformable to a numeric value.
If the argument of the sum() function is an empty sequence (in this example there is no element b), "0" is returned if the sum() function does not have a second argument. If the second argument is provided the returned value is equal to this argument.
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XSLT
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="2.0"> <xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/> <xsl:template match="/aaa"> <bbb> <xsl:value-of select="sum(1 to 99)"/> </bbb> <ccc> <xsl:value-of select="sum(a)"/> </ccc> <ddd> <xsl:value-of select="sum(b)"/> </ddd> <eee> <xsl:value-of select="sum(b,100)"/> </eee> </xsl:template> </xsl:stylesheet> |
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XML
<aaa> <a>5</a> <a>3</a> <a>7</a> <a>2</a> </aaa> |
Output
<bbb>4950</bbb> <ccc>17</ccc> <ddd>0</ddd> <eee>100</eee> |
| Previous chapter: | Implicit behaviour |
| Next chapter: | Functions operating on strings |
| Previous page: | Modulus |
| Next page: | Average |
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