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    <p>I strongly agree with the answer and blog post of Greg Beech.</p> <p>For more detailed comparison between <code>&lt;xsl:for-each&gt;</code> and <code>&lt;xsl:apply-templates&gt;</code> see <a href="http://markmail.org/message/xbm7tsglnhqogdzd" rel="nofollow noreferrer"><strong>my answer</strong></a> to the question "xsl:for-each vs. xsl:apply-templates" in the xsl-list, and enjoy <a href="http://markmail.org/message/xbm7tsglnhqogdzd#query:+page:1+mid:u6vldphwj263tejm+state:results" rel="nofollow noreferrer"><strong>the whole thread</strong></a>.</p> <p>"<em>xsl:apply-templates is much richer and deeper than xsl:for-each, even simply because we don't know what code will be applied on the nodes of the selection -- in the general case this code will be different for different nodes of the node-list. <strong>Also, the code that will be applied can be written way after the xsl:apply templates was written and by people that do not know the original author</em></strong>".</p> <p>Another difference from a procedural programming language is that the order in which the templates will be applied is not predefined. There is no notion of "state" or "order of execution" in a pure functional programming language. </p> <p>Neither <a href="http://www.w3.org/TR/xslt20/#applying-templates" rel="nofollow noreferrer"><strong>XSLT 2.0</strong></a> nor <a href="http://www.w3.org/TR/xslt#section-Processing-Model" rel="nofollow noreferrer"><strong>XSLT 1.0</strong></a> specifies any particular order of applying the selected template rules -- only that their results will be combined according to the order of the nodes (in the sorted sequence, if there are any <code>&lt;xsl:sort&gt;</code> directives or otherwise in the document order of the nodes), on which the templates are applied.</p> <p>The <a href="http://www.w3.org/TR/xslt20/#applying-templates" rel="nofollow noreferrer"><strong>XSLT 2.0 Spec</strong></a> says:</p> <p>"<em>Each template rule that is evaluated produces a sequence of items as its result. The resulting sequences (one for each node in the sorted sequence) are then concatenated, to form a single sequence. They are concatenated retaining the order of the nodes in the sorted sequence. The final concatenated sequence forms the result of the xsl:apply-templates instruction</em>"</p> <p>The <a href="http://www.w3.org/TR/xslt#section-Processing-Model" rel="nofollow noreferrer"><strong>XSLT 1.0</strong></a> spec says:</p> <p>"<em>Implementations are free to process the source document in any way that produces the same result as if it were processed using this processing model</em>."</p> <p>It is even possible that an XSLT implementation may apply templates (or the body of an <code>&lt;xsl:for-each&gt;</code>) in parallel.</p>
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    1. POCan't stop thinking about XSLT in procedural terms... help with apply-templates
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    1. USDimitre Novatchev
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    1. COI don't see what would be incorrect in my answer. You add details on execution order, but for the transformation result (and anything else, XSL should be side-effect free) execution order is irrelevant, or is it not? My "about that's all there is" maybe provocative, but what else is there?
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      1. USTomalak
    2. COTomalak, my comment was: ""That's about all there is to it"... Not exactly, see my answer". I didn't ever say your answer was incorrect. Simply, <xsl:apply-templates> is a much bigger topic. Cheers
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    3. COI imagined that "not exactly" would be a friendlier way of saying "that's wrong" (it usually is in the English-speaking world).
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