EXSLT:set:difference
From MDC
This article covers features introduced in Firefox 3
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set:difference() returns the difference between two node-sets. In other words, it returns a node-set whose nodes are in one node-set but not in the other.
The template version of set:difference applies templates to these nodes in set:difference mode, copying the nodes so that a result tree fragment consisting of the nodes is returned.
[edit] Syntax
set:difference(nodeSet1, nodeSet2)
[edit] Arguments
nodeSet1- The node-set from which to subtract nodes.
nodeSet2- The set of nodes to subtract from nodeSet1.
[edit] Returns
A node-set containing the nodes that are in nodeSet1 but not in nodeSet2.
[edit] Defined
[edit] Gecko support
Supported in Gecko 1.9 and later.