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Re: Basic program structures in XSLT (was: Re: Data-d

• From: Thomas Passin <list1@tompassin.net>
• To: xml-dev@lists.xml.org
• Date: Fri, 9 Dec 2022 05:56:10 -0500

Sorry Rick, I was expanding on your input, not correcting your suggestions,
i.e. suggesting what I needed when first faced with James xslt 1 offering.

regards

On Fri, 9 Dec 2022 at 08:40, Rick Jelliffe <rjelliffe@allette.com.au> wrote:

On Fri, 9 Dec 2022, 7:06 pm Dave Pawson, <dave.pawson@gmail.com> wrote:

Yes, but Rick....

On Fri, 9 Dec 2022 at 07:01, Rick Jelliffe <rjelliffe@allette.com.au> wrote:

Most basic?

1. Push versus pull.

Not enough? Why? explain these please? What's the impact of wrong choice?
When to 'break' this rule (guidance)

Pull programming is where you pull in values into a template. Push programming is where the structure of the incoming document determines the templates that are run.

2. Event-based programming =  template matching descent default

Wozzat?
   Template match? Never heard of it.
   Descent... of what? Why default? alternatives

<xsl:template match="..."
     <xsl:apply-templates />

3. XPaths 1.0 location steps, and value-of

     What, how does xpath help / cause problems?
     How used in this funny 'language'
      The real nugget of XSLT, but quite alien to procedural programmers?

Yes.

4. If and choose

   Yep, at last, something  most will recognise recognise!
   But where is my 'repeat until'?

Xsl has if and choose. It does not have repeat until: it uses Xpath for that.

5. Rearranging and repeating things: variables,  apply-templates/@select, modes

      I'd split
         Rearranging and repeating things, again quite key (why etc...)
    variables? Oh no they're not.
        (hope apply templates explained before now)
        BIG session on select 'rules'
        modes? Another foreign language.

Not basic: key, function, anything in xpath 2 or 3 but not in xpath 1.

+10

In other words, developers should be trained to first use the distinctive language features before (and instead of) rushing to use generic (I.e. vanilla) functional features.

+1

Thanks Rick.


regards



--
Dave Pawson
XSLT XSL-FO FAQ.
Docbook FAQ.

• Follow-Ups:
  • Re: Basic program structures in XSLT (was: Re: Data-driven application --> the data is essentially "machine code" to theapplication, right?)
    • From: "C. M. Sperberg-McQueen" <cmsmcq@blackmesatech.com>

• References:
  • Data-driven application --> the data is essentially "machine code" tothe application, right?
    • From: Roger L Costello <costello@mitre.org>
  • Re: Data-driven application --> the data is essentially"machine code" to the application, right?
    • From: Shlomi Fish <shlomif@shlomifish.org>
  • Re: Data-driven application --> the data is essentially"machine code" to the application, right?
    • From: Michael Kay <mike@saxonica.com>
  • Basic program structures in XSLT (was: Re: Data-drivenapplication --> the data is essentially "machine code" to the application,right?)
    • From: "C. M. Sperberg-McQueen" <cmsmcq@blackmesatech.com>
  • Re: Basic program structures in XSLT (was: Re: Data-driven application --> the data is essentially "machine code" to theapplication, right?)
    • From: Ihe Onwuka <ihe.onwuka@gmail.com>
  • Re: Basic program structures in XSLT (was: Re: Data-driven application --> the data is essentially "machine code" to theapplication, right?)
    • From: Rick Jelliffe <rjelliffe@allette.com.au>
  • Re: Basic program structures in XSLT (was: Re: Data-driven application --> the data is essentially "machine code" to theapplication, right?)
    • From: Dave Pawson <dave.pawson@gmail.com>
  • Re: Basic program structures in XSLT (was: Re: Data-driven application --> the data is essentially "machine code" to theapplication, right?)
    • From: Rick Jelliffe <rjelliffe@allette.com.au>
  • Re: Basic program structures in XSLT (was: Re: Data-driven application --> the data is essentially "machine code" to theapplication, right?)
    • From: Dave Pawson <dave.pawson@gmail.com>