XSLT, 2nd Edition

Name

false()

Always returns the boolean value false. Remember that the strings “true” and “false” don’t have any special significance in XSLT; any string with a length greater than zero is true. This function (and the true() function) allow you to generate boolean values when you need them.

Syntax

[1.0] boolean false()
[2.0] xs:boolean false()

Inputs

None.

Output

The boolean value false.

Defined in

XPath section 4.3, “Boolean Functions.”

[2.0] XQuery 1.0 and XPath 2.0 Functions and Operators Section 9.1, “Additional Boolean Constructor Functions.”

Example

Here’s a brief example that uses the false() function:

<?xml version="1.0"?>
<!-- false.xsl -->
<xsl:stylesheet version="1.0" 
  xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

  <xsl:output method="text"/>

  <xsl:template match="/">
    <xsl:text>&#xA;A test of the false() function:&#xA;&#xA;</xsl:text>

    <xsl:text>  false() returned </xsl:text>
    <xsl:value-of select="false()"/>
    <xsl:text>!</xsl:text>
  </xsl:template>
</xsl:stylesheet>

When using this stylesheet against any XML document, it generates this less-than exciting result:

A test of the false() function:

  false() returned false!