Subject: Re: [xsl] Why? A function that computes atomic values should use xsl:sequence rather than xsl:value-of From: "Graydon graydon@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Tue, 31 Mar 2020 13:57:23 -0000 |
On Tue, Mar 31, 2020 at 01:40:19PM -0000, Costello, Roger L. costello@xxxxxxxxx scripsit: > Hi Folks, > > I have a function that returns a xs:boolean. I used xs:value-of to return the value. Saxon 9.9.1.5 gives this warning message: > > A function that computes atomic values > should use xsl:sequence rather than > xsl:value-of > > Why? > > Why should a function use xsl:sequence? xsl:value-of returns a text node. xsl:sequence returns what it has, which at least has the possibility of being an atomic value in a function that computes atomic values. So while things work via implicit type conversion, you're getting a warning to tell you that you're making the optimizer work hard for no obvious purpose. -- Graydon
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