Subject: Re: [xsl] "if-condition-return something" idiom : is it possible in XSLT ? From: "Liam R E Quin liam@xxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Mon, 16 Jun 2014 20:12:01 -0000 |
On Mon, 2014-06-16 at 13:00 +0000, Kerry, Richard richard.kerry@xxxxxxxx wrote: > I tend to view (*) xsl:choose as similar to C's "switch", which needs > to do a single calculation to work out which branch to run. > (*) I may well be wrong in this..... xsl:choose is like a sequence of C if statements in practice, and is what yu want for your C++-like example. But I think it better to think of xsl:choose in the mathematical sense, e.g. A := f(x) 0 when x <= 1 17 when x <= 7 A(x - 1) . A(x - 2) when x^2 + 1 is prime 31x / 7 otherwise That is, I prefer to think of XSLT as a functional language in which one is describing the end result rather than as a procedural language with loops and returns. There's no concept of an "early return" from a mathematical function, nor from an XSLT one. Liam -- Liam Quin - XML Activity Lead, W3C, http://www.w3.org/People/Quin/ Pictures from old books: http://fromoldbooks.org/ Ankh: irc.sorcery.net irc.gnome.org freenode/#xml
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