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Programming Leftovers

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Development

  • Your "21st century banking" is sixty years old [Ed: At least COBOL, unlike "modern" and bloated frameworks, remains relevant and still works after all these years]

    There is one software language that controls all your money. A language that pretty much runs, all by itself, the cores of the worldwide financial systems. It cannot be replaced (not without great expense and risk, that is), and cannot be kept either, because the experts that really know it are dying out.

  • Qt Online Installer 4.2.0 beta released
  • Why Coda thinks documents are the internet's next big platform

    The way Shishir Mehrotra sees it, digital documents haven't really changed in 50 years. Since the days of WordStar, Harvard Graphics and VisiCalc, the basic idea of what makes up a document, presentation and spreadsheet haven't really changed.

    Now, thanks to companies like Coda — where Mehrotra is founder and CEO — along with Notion, Quip and others, that's starting to change. These companies are building tools that can do multiple things in a single space, that are designed both for creating and for sharing, and that turn documents from "a piece of paper on a screen" into something much more powerful. And to hear Mehrotra tell it, documents are headed toward a future that looks more like an operating system than a Word file.

    Mehrotra joined the Source Code podcast to talk about Coda's recent announcements, the two-year project to rebuild its core technology, Coda's future as a platform and why he thinks documents can be much more than just documents going forward.

  • Node.js 17 released, not intended for production use • The Register [Ed: Microsoft Tim on how Microsoft is weaponising TypeScript and GitHub to take over Node.js; there's also an outpost in the Linux Foundation that's controlled by a Microsoft mole, "Open"JS]

    Node.js 17 is out, loaded with OpenSSL 3 and other new features, but it is not intended for use in production – and the promotion for Node.js 16 to an LTS release, expected soon, may be more important to most developers.

  • PostgreSQL: PostgreSQL JDBC 42.3.0 released

    The PostgreSQL JDBC team is proud to announce version 42.3.0

    The major change here is that we have dropped support for JAVA 6 and JAVA 7

    This allows us to move forward with further changes

  • GammaRay 2.11.3 Released!

    GammaRay 2.11.3 has been released! GammaRay is KDAB’s software introspection tool for Qt applications. Leveraging the QObject introspection mechanism, it allows you to observe and manipulate your application at runtime. This works both locally on your workstation and remotely on an embedded target. Version 2.11.3 will be the last in the 2.11 series.

    After this release, we will turn our attention to GammaRay 3.0, with the primary focus of adding support for Qt 6.

  • Perl Weekly Challenge 135: Middle 3-Digits and Validate SEDOL

More in Tux Machines

Audiocasts/Shows: Late Night Linux, Destination Linux, and More

Kernel: Slowdown, CephFS, and FS-Cache / CacheFiles

  • How a performance boost in Linux kernel for one family of Intel chips slowed its latest Alder Lake processors

    The mixture of performance and efficiency CPUs in Intel’s 12th-gen Core processors, code-named Alder Lake, hasn’t just been causing problems for some Windows gamers – it almost led to complications for Linux. Phoronix’s Michael Larabel noticed a performance hit in the kernel a fortnight ago – in a work-in-progress release candidate, we should stress – and a fix for the scheduling code landed a little later. It turned out the kernel suffered on Alder Lake chips due to a performance-enhancing tweak for another Intel processor family: the multiple-Atom-core-based Jacobsville. This year, Intel officially canned its Lakefield chips. These consisted of a performance core called Sunny Cove as well as Atom-class efficiency cores dubbed Tremont. Crucially, there are still multi-Tremont-core embedded processors out there, such as Snow Ridge. These are server and infrastructure-oriented components with up to 24 cores. The first proposed cut of kernel 5.16, specifically 5.16-rc1, contained a revision to the scheduler that makes it aware that some clusters of cores share a block of L2 cache – as seen in Snow Ridge and Jacobsville.

  • Testing the Linux Kernel CephFS Client with xfstests

    I do a lot of testing with the kernel cephfs client these days, and have had a number of people ask about how I test it. For now, I’ll gloss over the cluster setup since there are other tutorials for that.

  • Major Rewrite Of Linux's FS-Cache / CacheFiles So It's Smaller & Simpler - Phoronix

    As part of David Howells of Red Hat long-term work on improving the caching code used by network file-systems, he today posted a big patch series rewriting the fscache and cachefiles code as the latest significant step on that adventure. Howells posted a set of 64 patches for rewriting the kernel's fscache and cachefiles code. Linux's fsache is a general purpose cache used by network file-systems while cachefiles is for providing a caching back-end for mounted local file-systems. The Red Hat engineer has been working on this rewrite for more than the past year.

Ubuntu Weekly Newsletter and Ubuntu Desktop on Google Clown

  • Ubuntu Weekly Newsletter Issue 711

    Welcome to the Ubuntu Weekly Newsletter, Issue 711 for the week of November 21 – 27, 2021. The full version of this issue is available here.

  • Launch Ubuntu Desktop on Google Cloud

    This tutorial shows you how to set up a Ubuntu Desktop on Google Cloud. If you need a graphic interface to your virtual desktop on the cloud, this tutorial will teach you how to set up a desktop environment just like what you can get on your own computer.

Open Hardware/Modding: ESP32, 3-D Printing, Raspberry Pi Pico, PocketBeagle

  • Wireless thermal printer kit features M5Stack ATOM Lite controller - CNX Software

    This is certainly not the first ESP32 thermal printer solution, as there are various implementations including bitbank2 thermal printer Arduino connecting ESP32 and nRF52 boards to the printer over Bluetotoh LE, or a Arduino sketches to print bitmaps over serial or MQTT.

  • Generate Fully Parametric, 3D-Printable Speaker Enclosures | Hackaday

    Having the right speaker enclosure can make a big difference to sound quality, so it’s no surprise that customizable ones are a common project for those who treat sound seriously. In that vein, [zx82net]’s Universal Speaker Box aims to give one everything they need to craft the perfect enclosure.

  • Z80 Video Output Via The Raspberry Pi Pico | Hackaday

    Building basic computers from the ground up is a popular pastime in the hacker community. [Kevin] is one such enthusiast, and decided to whip up a video interface for his retro Z80 machine.

  • The Calculator Charm: Calculatorium Leviosa! | Hackaday

    Have you ever tried waving your hand around like a magic wand and summoning a calculator? We would guess not since you’d probably look a little silly doing so. That is unless you had [Andrei’s] cool gesture-controlled calculator. [Andrei] thought it would be helpful to use a calculator in his research lab without having to take his gloves off and the results are pretty cool. His hardware consists of a PocketBeagle, an OLED, and an MPU6050 inertial measurement unit for capturing his hand motions using an accelerometer and gyroscope. The hardware is pretty straightforward, so the beauty of this project lies in its machine learning implementation.