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Programming: Perl, Python, Java and JavaScript

  • Perl Weekly Challenge 61: Max Subarray Product and IP Address Partition

    These are some answers to the Week 61 of the Perl Weekly Challenge organized by Mohammad S. Anwar.

  • Dataquest: New Course: NumPy for Data Engineers

    We've just launched a new interactive online course that'll take you from zero to pro with NumPy in the context of data engineering — dive in!

  • Switch A Django Project To Use Pytest - Building SaaS #57

    In this episode, I replaced the default Django test runner to use pytest. We walked through installation, configuration, how to change tests, and the benefits that come from using pytest.

    We started by looking at the current state of the test suite to provide a baseline to compare against. After that, I went to PyPI to find the version of pytest-django that we wanted to install. I added the package to my requirements-dev.txt and installed the update.

  • Oracle’s Linux Team Wishes the Java Community a Happy 25th

    From one open source community to another, Oracle’s Linux team would like to congratulate the Java community on its 25th anniversary! Java has an impressive history. It was a breakthrough in programming languages, allowing developers to write once and have code run anywhere. And, it has enabled developers to create a myriad of innovative solutions that help run our world. Read Georges Saab’s post to learn more.

    Both open source technologies, Java and Linux benefit from communities that collectively drive their advancements. While the technologies aren’t similar, there are areas where both work together and complement each other.

    One area is Java’s support for Linux HugePages. Using Linux HugePages can improve system performance by reducing the amount of resources needed to manage memory. The result of less overhead in the system means more resources are available for Java and the Java app, which can make both run faster.

  • New Training Course Advances Knowledge to Encourage Node.js Application Development Careers

    LFW211, developed in conjunction with the OpenJS Foundation, is geared toward developers who wish to master and demonstrate Node.js specialization, in particular for creating Node.js applications. The course provides core skills for effectively harnessing a broad range of Node.js capabilities at depth, equipping developers with rigorous foundational skills and knowledge that will translate to building any kind of Node.js application or library.

Java programming language celebrates 25 years

  • Java programming language celebrates 25 years

    The Java programming language celebrates its silver anniversary this week, with May 23, 2020, marking 25 years from the day Sun Microsystems first introduced Java to the world. The venerable language has remained popular with enterprises even as a slew of rival languages, such as Python and Go, now compete for the hearts and minds of software developers. But Java is not standing still, with a revamp designed to address longtime pain points now in the offing.

    Arising out of the “Oak” project begun in 1991 and spearheaded by James Gosling, object-oriented Java gained fame for its “write once, run anywhere” portability, as the Java Virtual Machine supported multiple hardware platforms and operating systems, and Java applets could be run from a webpage. Java applets offered better performance than JavaScript for many years, but eventually fell out of favor with browser makers and were removed from Java in 2018.

Linux Foundation Launches Node.js Application Development Course

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Linux 5.8 Kernel: Qualcomm Adreno, MacBooks and AMD

  • Qualcomm Adreno 650 + 640 GPUs To Be Supported By Mainline Linux 5.8 Kernel

    The crew working on the MSM DRM driver from Freedreno / Google / Code Aurora (Qualcomm) have an interesting batch of changes for this open-source GPU driver for Qualcomm Adreno hardware come Linux 5.8. New hardware to be supported by this open-source MSM driver in Linux 5.8 include Qualcomm's Adreno 405, 640, and 650 series. The Adreno 405 is an old, low-end part from the 400 series and used by the Snapdragon 415/615/616/617 SoCs. The Adreno 405 support isn't particularly exciting but it's there for those interested along with the relevant MSM8x36 changes to the MDP5 code.

  • Linux 5.8 Picking Up A Quirk For Being Able To Reboot The 2009 MacBook Without Hangs

    With the upcoming Linux 5.8 cycle a quirk is being added to be able to reboot the 2009 era Apple MacBook without needing to boot with any special flags. Up to now the 2009 Apple MacBook (Macbook6,1) required a reboot=pci boot parameter added to the kernel otherwise when rebooting the system there would be a hang. This late 2009 MacBook (MC207LL/A) with Core 2 Duo CPU is very slow by today's standards and hopefully many of you still aren't using it in production, but should you be doing so and running new kernel releases, with Linux 5.8 the kernel can reboot without hanging or needing to manually add the flag.

  • AMD Energy Driver Queued Ahead Of Linux 5.8 For Core/Package Power Sensors

    Landing this weekend in hwmon-next ahead of the upcoming Linux 5.8 kernel cycle is the recently reported on "amd_energy" driver for supporting AMD Zen/Zen2 core and package energy sensors. This is the recently reported on work of a Google engineer allowing AMD Zen CPUs to expose power usage on Linux via the Runtime Average Power Limiting (RAPL) framework. The amd_energy driver is making it to the Linux 5.8 kernel by way of the hardware monitoring "hwmon" subsystem thanks to this Google open-source contribution.

today's howtos

Why Drupal is the Best CMS

Some CMS packages require a license, while free products may be unreliable. Drupal 8 is open-source software licensed under the GPL. It is distributed free of charge, with no restrictions on use. This means you can customize the functions as you see fit. Today, the sheer number of community-contributed modules is astonishing — over 43,000! The platform may be refined and adjusted following your needs. You will not be dependent on Drupal creators. Features may be added and removed with ease. The open-source nature also means that functionality is under constant scrutiny from the vast international community, so any bugs are detected and fixed in no time. Read more

Android Leftovers