File: Data.xml
<?xml version="1.0" encoding="utf-8"?>
<data>
<text>999</text>
<text>A123</text>
<text>-16</text>
<text>0</text>
<text/>
<text>false</text>
</data>
File: Transform.xslt
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<TABLE border="1">
<TR>
<td>node-set</TH>
<td>boolean</TH>
</TR>
<TR>
<TD>
<xsl:text>/</xsl:text>
</TD>
<TD>
<xsl:value-of select="boolean(/)"/>
</TD>
</TR>
<TR>
<TD>
<xsl:text>//text</xsl:text>
</TD>
<TD>
<xsl:value-of select="boolean(//text)"/>
</TD>
</TR>
<TR>
<TD>
<xsl:text>//number</xsl:text>
</TD>
<TD>
<xsl:value-of select="boolean(//number)"/>
</TD>
</TR>
<TR>
<TD>
<xsl:text>//text[23]</xsl:text>
</TD>
<TD>
<xsl:value-of select="boolean(//text[23])"/>
</TD>
</TR>
</TABLE>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><TABLE border="1"><TR><td>node-set</TH><td>boolean</TH></TR><TR><TD>/</TD><TD>true</TD></TR><TR><TD>//text</TD><TD>true</TD></TR><TR><TD>//number</TD><TD>false</TD></TR><TR><TD>//text[23]</TD><TD>false</TD></TR></TABLE>
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