zondag 27 februari 2022

Krita - Uitstekend programma voor creatievelingen

In Voor Nop 2015/18 omschreven we Krita als 'Het ultieme gratis teken-, schilder- en fotobewerkingsprogramma'. We hadden het toen over een versie uit de 2-serie. Onlangs verscheen van dit moois versie 5, en het zal duidelijk zijn dat dit product in die zeven jaar alleen nog maar beter is geworden. Dankzij een enorm aantal penselen en hulpmiddelen kan Krita moeiteloos concurreren met professionele teken- en animatiesoftware (ja, ook met bewegend beeld heeft Krita geen probleem). Heb je echter geen tekentalent, dan kun je Krita ook inzetten als zeer hoogwaardige fotobewerker met vele honderden filters.

Krita kun je hier downloaden.

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maandag 21 februari 2022

“Ignoring Hints” Catalogue

Via Oracle Scratchpad by Jonathan Lewis

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This is a list of all articles I've written to examine claims that Oracle has "ignored a hint", including articles where other aspects of hinting (such as SQL Plan Baslines) don't work as expected.

Each entry has a date stamp and a short note of the contents. Some of these will also appear in the generic "Hints" catalogue. The articles are generally listed most-recent first.

  • Use_nl() revisited (Oct 2021) – a detailed examination of how a simple hint has been used by the optimizer but still produce a plan that appears to have ignored it.
  • Index hints – pt. 1 (Jan 2021) – a voyage of discovery as index hints don't do exactly what you expect.
  • Index hints – pt. 2 (Jan 2021) – continuing the voyage of discovery with index skip scans and range scans.
  • Hinting errors (Jan 2021) – there are many reasons why your hints might be wrong; this is a list (probably incomplete) of possible reasons that I extracted from the Oracle executable.
  • Faking Baselines (Feb 2020) – an example of an SQL Plan Baseline that doesn't reproduce the plan it's supposed to.
  • Ignoring hints by choice (June 2019) – changes to the "_optimizer_ignore_hints" (previously hidden) parameter in 18g onwards. It's official, and has a companion.
  • Avoiding APPEND (March 2019) – ideas for making Oracle ignore an APPEND hint in a 3rd party application.
  • Parallelism (May 2017) – the parallel(N) hint does not mean "make this query run parallel with degree N".
  • What does use_nl(a,b) mean (Jan 2017) – a common misconception explained; this hint does not mean "do a nested loop from a to b".
  • Hinting across upgrades (March 2016) – updates can introduce new transformations that make your previously working set of hints for a query incomplete: an example.
  • Ignore this hint – please (May 2014) – Oracle doesn't "ignore" hints, but sometimes you might wish it did.

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Yogesh Mahajan: Feature Test Automation in pgAdmin 4

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pgAdmin 4 is the most popular and the most feature rich Open Source administration and development platform for PostgreSQL. pgAdmin can be run either in desktop mode (single user) or server mode (multi user). In server mode, pgAdmin can be accessed using a browser on a local operating system.

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zaterdag 5 februari 2022

[UPDATE] Textadept v11.3

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Textadept is a minimalist programmer's text editor featuring split views, themes, auto-complete. Also features syntax highlighting, advanced search, and bookmarks.

Cross-platform with versions available for Mac OSX, Linux, and BSD.

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