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Programming Leftovers

Submitted by Roy Schestowitz on Tuesday 3rd of March 2020 06:07:52 AM Filed under
Development
  • Demonstrating PERL with Tic-Tac-Toe, Part 2

    The astute observer may have noticed that PERL is misspelled. In a March 1, 1999 interview with Linux Journal, Larry Wall explained that he originally intended to include the letter “A” from the word “And” in the title “Practical Extraction And Report Language” such that the acronym would correctly spell the word PEARL. However, before he released PERL, Larry heard that another programming language had already taken that name. To resolve the name collision, he dropped the “A”. The acronym is still valid because title case and acronyms allow articles, short prepositions and conjunctions to be omitted (compare for example the acronym LASER).

    Name collisions happen when distinct commands or variables with the same name are merged into a single namespace. Because Unix commands share a common namespace, two commands cannot have the same name.

    The same problem exists for the names of global variables and subroutines within programs written in languages like PERL. This is an especially significant problem when programmers try to collaborate on large software projects or otherwise incorporate code written by other programmers into their own code base.

    Starting with version 5, PERL supports packages. Packages allow PERL code to be modularized with unique namespaces so that the global variables and functions of the modularized code will not collide with the variables and functions of another script or module.

    Shortly after its release, PERL5 software developers all over the world began writing software modules to extend PERL’s core functionality. Because many of those developers (currently about 15,000) have made their work freely available on the Comprehensive Perl Archive Network (CPAN), you can easily extend the functionality of PERL on your PC so that you can perform very advanced and complex tasks with just a few commands.

  • OpenBLAS 0.3.9 Released With More AVX-512 Tuning, Arm Neoverse N1 Support

    OpenBLAS 0.3.8 was released shy of a month ago for this popular Basic Linear Algebra Subprograms implementation while now has been succeeded by OpenBLAS 0.3.9. 

    OpenBLAS 0.3.9 continues optimizing for x86_64 and other CPU architectures. On the x86_64 front there are a few long-standing error/bug fixes, fixed the CPU detection code for Goldmont+ and Ice Lake, fixed Skylake-X compilation on MinGW, and continued AVX work. The latest on the Advanced Vector Extensions front is improving the AVX-512 GEMM3M code, a AVX-512 kernel for STRMM, and improving the AVX2 GEMM kernel performance. 

  • Custom client-side window decorations in Qt 5.15

    This is just a quick update about a new feature in Qt 5.15 that I'm really excited
    about.

    Traditionally, window decorations have been a pretty boring thing. Title bar,
    border, minimize, maximize, resize and quit... and that's it.

    In recent times, however, applications more and more tend to include
    application specific UI and theming in their decorations. Just a couple of screenshots to
    explain what I'm talking about:

  • Blockchain jobs: Here are the top vacancies in Accenture, IBM and others [Ed: So now Microsoft alone is used to infer what  jobs are in demand? No other vacancies counted? Microsoft already (mis)uses GitHub to pretend all projects not controlled by Microsoft neither exist nor count. That is a major propaganda tool.]]

    A LinkedIn report titled...

  • Jussi Pakkanen: Meson manual sales numbers and a profitability estimate

    The Meson Manual has been available for purchase for about two months now. This is a sufficient amount of time to be able to estimate total sales amounts and the like. As one of the goals of the project was to see if this could be a reasonable way to compensate FOSS maintainers for their work, let's go through the numbers in detail.

    [...]

    So was it worth it?

    It depends? As a personal endeavor writing, publishing and selling a full book is very satisfying and rewarding (even though writing it was at times incredibly tedious). But financially? No way. The break-even point seems to be about 10× the current sales. If 100× sales were possible, it might be sufficient amount for more people to take the risk and try to make a living this way. With these sales figures it's just not worth it.

»

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today's howtos

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    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

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  • How To Install MongoDB on AlmaLinux 9 - idroot

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  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
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