Overview of Rust and Pony

I wanted to study some twenty-first century programming languages, open source and not coming out from a big vendor, and I picked Rust and Pony. Here is my potted overview of the features. Both Pony and Rust are compiled programming languages for highly concurrent applications, use C family syntax (like…

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Using Schematron to Test Transformations: Lesson Learned

This decade, I been twice involved in quite intense year-long projects to do exhaustive acceptance testing of XML transformations using Schematron. What lessons did I learn? Projects So the context here is the need for error-free transformations of large numbers of high-value complex documents, where the number of documents and…

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Schematron and Scrum

How does Schematron fit in with Scrum? This a follow-up to Error Messages and Diagnostics should be Inputs to the Developer not Outputs. According to that, error messages and diagnostics should be provided through the Product Manager as details on the appropriate Product Backlog items. In Scrum terms, you want…

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Where is the Scrum in “Scrum”?

I have never really understood why the Scrum framework calls itself “Scrum”.   And it bothered me, as it must any right-thinking person with their priorities straight. The scrum in rugby is where the two teams form opposing battlements and push against each other, a ball is introduced to the tunnel…

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Trying out PlantUML with a package diagram for Schematron

PlantUML is a neat tool, quite mature, for generating UML diagrams from text, using a little domain-specific language. It reminds me of UNIX pic, which allowed really fast and easy generation of diagram, up to a point. WYSIWYG really sucks for many technical diagrams: I actively dislike Visio for UML,…

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Schematron QuickFix

On the YouTube channel for the Schematron meeting at XML Prague 2017 is an update on Schematron QuickFix (SQF).   SWF is an extension layer on top of Schematron that lets you register one or more possible fixes that you can select: each fix is composed of various add, delete, replace…

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XML Conferences in 2017

Following on from XML Prague 2017 in February, the XML London 2017 conference is on in June. The year is rounded up in August with the Basilage conference trying out Maryland, USA as a change from the usual Canadian location. (I am not sure if Basilage will be streaming to…

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Optimizing Schematron using @saxon:memo-function

Tony Graham mentioned in an email his use of Saxon’s optimization hint attribute xsl:function/@saxon:memo-function to memo-ize the values of some functions.  He had investigated it for his Open Source focheck project that checks XSL-FO scripts. I was intrigued as I had never used this technique, and Tony kindly provided details…

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Billy Lynn’s Long Halftime Walk reviewed: Lo-Fi versus Hi-Fi

Ben Fountain’s story has many of movie director Ang Lee’s tropes: the innocent boy making his way through a hostile world to an uncertain future, the adoptive father figure providing unexpected gentleness and wisdom,  the feisty girl with compromising motivations, Go West young man to escape the stultifying Nest, characters…

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Design motivations of different schema languages

The XML.COM website has Rick Jelliffe’s article  Schemas: Different Strokes for Different Folks “Schema languages are the bedrock of XML software engineering; but why are they so different? Because their creators approached them with very different viewpoints about how software engineering should work.” This prompted a discussion about closure on…

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Schematron-Related Patents

Going to the USPTO website and typing aclm/(Schematron) into the advanced search field shows US patents that mention Schematron in their actual claims (the core of the patent).  Here is the result: PAT. NO. Title 1 9,146,908 Validating an XML document 2 9,128,999 Managing software product-line customizations 3 8,914,370 Generating…

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