[xsl] First steps with high order functions

["Christophe Marchand cmarchand@xxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>]

Hello,

I'm trying to learn high order functions, and I have some difficulties. 
If someone could help...


I have a normal function :

B  <xsl:function name="nu:camelCase" as="xs:string?">
B B B  <xsl:param name="s" as="xs:string?"/>
B B B  ...
B  </xsl:function>


I want to apply it on each word of a sentence :

B  <xsl:function name="nu:clearUsername" as="xs:string?">
B B B  <xsl:param name="name" as="xs:string?"/>
B B B  <xsl:choose>
B B B B B  <xsl:when test="empty($name)"><xsl:sequence select="()"/></xsl:when>
B B B B B  <xsl:when test="contains($name, ' ')">
B B B B B B B  <xsl:variable name="temp" select="tokenize($name, ' ')"/>
B B B B B B B  <xsl:sequence select="string-join(for-each($temp, 
nu:camelCase#1), ' ')"/>
B B B B B  </xsl:when>
B B B B B  <xsl:otherwise>
B B B B B B B  <xsl:sequence select="$name"/>
B B B B B  </xsl:otherwise>
B B B  </xsl:choose>
B  </xsl:function>

Does the for-each is correct ? Is there another syntax to make this work 
with Saxon-HE ?

Is there a better way to do this ?

Thanks in advance,
Christophe