<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Not A Number</title><link>https://not-a-number.io/</link><description>Recent content on Not A Number</description><generator>Hugo -- gohugo.io</generator><language>en-US</language><managingEditor>pol.dellaiera@protonmail.com (Pol Dellaiera)</managingEditor><webMaster>pol.dellaiera@protonmail.com (Pol Dellaiera)</webMaster><copyright>© 2026 Not A Number</copyright><lastBuildDate>Tue, 08 Sep 2026 09:59:22 +0200</lastBuildDate><atom:link href="https://not-a-number.io/index.xml" rel="self" type="application/rss+xml"/><item><title>On the use of AI</title><link>https://not-a-number.io/2026/on-the-use-of-ai/</link><pubDate>Mon, 07 Sep 2026 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2026/on-the-use-of-ai/</guid><description/></item><item><title>Down the LoRa(bbit) Hole: From Meshtastic to 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Dellaiera)</author><guid>https://not-a-number.io/2025/retrospective-2024/</guid><description/></item><item><title>Understanding Kolmogorov Complexity</title><link>https://not-a-number.io/2024/understanding-kolmogorov-complexity/</link><pubDate>Thu, 18 Jan 2024 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2024/understanding-kolmogorov-complexity/</guid><description/></item><item><title>Retrospective 2023</title><link>https://not-a-number.io/2023/retrospective-2023/</link><pubDate>Sat, 23 Dec 2023 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2023/retrospective-2023/</guid><description/></item><item><title>Happy new year!</title><link>https://not-a-number.io/2022/happy-new-year/</link><pubDate>Sat, 01 Jan 2022 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2022/happy-new-year/</guid><description/></item><item><title>Functional programming and PHP 8</title><link>https://not-a-number.io/2021/functional-programming-and-php-8/</link><pubDate>Tue, 13 Jul 2021 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2021/functional-programming-and-php-8/</guid><description/></item><item><title>AFUP interview</title><link>https://not-a-number.io/2021/afup-interview/</link><pubDate>Wed, 07 Apr 2021 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2021/afup-interview/</guid><description/></item><item><title>Prime numbers generation</title><link>https://not-a-number.io/2020/prime-numbers-generation/</link><pubDate>Thu, 03 Sep 2020 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2020/prime-numbers-generation/</guid><description/></item><item><title>Lazy collection oddities</title><link>https://not-a-number.io/2020/lazy-collection-oddities/</link><pubDate>Mon, 10 Aug 2020 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2020/lazy-collection-oddities/</guid><description/></item><item><title>About</title><link>https://not-a-number.io/about/</link><pubDate>Wed, 08 Apr 2020 09:52:21 +0200</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/about/</guid><description/></item><item><title>Bookshelf</title><link>https://not-a-number.io/bookshelf/</link><pubDate>Wed, 08 Apr 2020 09:52:21 +0200</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/bookshelf/</guid><description/></item><item><title>Projects</title><link>https://not-a-number.io/projects/</link><pubDate>Wed, 08 Apr 2020 09:52:21 +0200</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/projects/</guid><description/></item><item><title>COVID19, teleworking and the other side of the coin</title><link>https://not-a-number.io/2020/covid19-teleworking-and-the-other-side-of-the-coin/</link><pubDate>Mon, 06 Apr 2020 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2020/covid19-teleworking-and-the-other-side-of-the-coin/</guid><description/></item><item><title>Summer vacations are over?</title><link>https://not-a-number.io/2019/summer-vacations-are-over/</link><pubDate>Mon, 09 Sep 2019 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2019/summer-vacations-are-over/</guid><description/></item><item><title>Taskman, a friendly tasks runner</title><link>https://not-a-number.io/2019/taskman-a-friendly-tasks-runner/</link><pubDate>Sun, 21 Apr 2019 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2019/taskman-a-friendly-tasks-runner/</guid><description/></item><item><title>First EU-FOSSA Hackathon about security, PHP, Symfony and API Platform</title><link>https://not-a-number.io/2019/first-eu-fossa-hackathon-about-security-php-symfony-and-api-platform/</link><pubDate>Sun, 07 Apr 2019 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2019/first-eu-fossa-hackathon-about-security-php-symfony-and-api-platform/</guid><description/></item><item><title>PHP, composition and inheritance</title><link>https://not-a-number.io/2019/php-composition-and-inheritance/</link><pubDate>Thu, 21 Feb 2019 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2019/php-composition-and-inheritance/</guid><description/></item><item><title>PHPTree, a fast tree implementation</title><link>https://not-a-number.io/2018/phptree-a-fast-tree-implementation/</link><pubDate>Thu, 27 Dec 2018 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2018/phptree-a-fast-tree-implementation/</guid><description/></item><item><title>How to use the PHP traits?</title><link>https://not-a-number.io/2018/how-to-use-the-php-traits/</link><pubDate>Tue, 30 Oct 2018 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2018/how-to-use-the-php-traits/</guid><description/></item><item><title>How did I fall into Drupal</title><link>https://not-a-number.io/2018/how-did-i-fall-into-drupal/</link><pubDate>Sun, 15 Jul 2018 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2018/how-did-i-fall-into-drupal/</guid><description/></item><item><title>Registry on steroids</title><link>https://not-a-number.io/2018/registry-on-steroids/</link><pubDate>Tue, 10 Jul 2018 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2018/registry-on-steroids/</guid><description/></item><item><title>Numberphile and Neo4J numbers experimentations</title><link>https://not-a-number.io/2018/numberphile-and-neo4j-numbers-experimentations/</link><pubDate>Mon, 19 Feb 2018 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2018/numberphile-and-neo4j-numbers-experimentations/</guid><description/></item><item><title>Discovering a new database: 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Dellaiera)</author><guid>https://not-a-number.io/2017/reaching-and-overpassing-the-drupal-7-limits/</guid><description/></item><item><title>PHP experimentations</title><link>https://not-a-number.io/2017/php-experimentations/</link><pubDate>Wed, 20 Sep 2017 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2017/php-experimentations/</guid><description/></item><item><title>A word about Atomium</title><link>https://not-a-number.io/2017/a-word-about-atomium/</link><pubDate>Mon, 10 Jul 2017 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2017/a-word-about-atomium/</guid><description/></item><item><title>My favorite software</title><link>https://not-a-number.io/2017/my-favorite-software/</link><pubDate>Mon, 01 May 2017 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2017/my-favorite-software/</guid><description/></item><item><title>What is PHPermutations?</title><link>https://not-a-number.io/2017/what-is-phpermutations/</link><pubDate>Thu, 13 Apr 2017 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2017/what-is-phpermutations/</guid><description/></item><item><title>Prenez un chewing-gum Emile</title><link>https://not-a-number.io/2017/prenez-un-chewing-gum-emile/</link><pubDate>Wed, 12 Apr 2017 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2017/prenez-un-chewing-gum-emile/</guid><description/></item><item><title>Why a blog?</title><link>https://not-a-number.io/2017/why-a-blog/</link><pubDate>Sat, 01 Apr 2017 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2017/why-a-blog/</guid><description/></item><item><title>Why companies are not ready for Drupal?</title><link>https://not-a-number.io/2012/why-companies-are-not-ready-for-drupal/</link><pubDate>Mon, 02 Jul 2012 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/2012/why-companies-are-not-ready-for-drupal/</guid><description/></item><item><title/><link>https://not-a-number.io/.htaccess</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/.htaccess</guid><description/></item><item><title/><link>https://not-a-number.io/_redirects</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/_redirects</guid><description/></item><item><title/><link>https://not-a-number.io/cv/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/cv/</guid><description/></item><item><title/><link>https://not-a-number.io/master-thesis/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/master-thesis/</guid><description/></item><item><title/><link>https://not-a-number.io/sponsor/</link><pubDate>Mon, 01 Jan 0001 00:00:00 +0000</pubDate><author>pol.dellaiera@protonmail.com (Pol Dellaiera)</author><guid>https://not-a-number.io/sponsor/</guid><description/></item></channel></rss>