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March 2019

LLVM Clang 9.0 Adds "-ftime-trace" To Produce Useful Time Trace Profiling Data

Filed under
Development
BSD

LLVM has merged a very useful feature for the Clang 9.0 release this autumn: the -ftime-trace feature allows producing time trace profiling data in a friendly format that is useful for developers to better understand where the compiler is spending most of its time and other areas for improvement.

Clang has already supported -ftime-report for printing time summaries for each stage of the compilation process while -ftime-trace yields much more useful data. The output of -ftime-trace is JSON-based profiling outputs that can be loaded into Chrome's chrome://tracing visualizer. This data shows how much time LLVM/Clang is spending on compiling each file, down to the function granularity.

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SDDM v0.18.1

Filed under
KDE

We are happy to release a new SDDM version.

SDDM is a Qt based graphical login manager developed in a collaborative fashion by people from Liri, KDE and LXQt.

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Linux Lite 4.4 is ready to replace Microsoft Windows on your aging PC

Filed under
Linux

One of the best things about operating systems based on the Linux kernel is they can sometimes be very lightweight. Why is this important? Well, when an OS uses very few resources, it can breathe new life into an aging PC. In other words, just because Windows 7 or Windows 10 run like molasses on your old computer, that doesn't mean you have to buy a new one. The right Linux distribution can make your older PC feel fast and new.

One of the most popular lightweight Linux-based operating systems is Linux Lite. Heck, the name of the distribution tells you that it is designed to use few resources! Version 4.4 is now available, and as per usual, it is based on the latest Ubuntu LTS -- 18.04. The Xfce desktop environment will feel familiar to those switching from Windows. Those new to Linux will also appreciate the easy access to many popular programs, such as Skype, Steam, and Spotify. Even the excellent Microsoft Office alternative, LibreOffice, is included.

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Openness, Open Data and Open Hardware

Filed under
OSS
  • Open-source seeds: protecting new crops from privitisation

    From the green grass of England to the tropical forests of the Amazon basin and the semi-arid plains of North Africa, when it comes to food, no one crop can suit every soil type, or withstand the challenges of climate change. It is therefore vitally important that humans seek to preserve and increase the biological diversity of crops.

    In pursuit of this goal, Dr Johannes Kotschi from the Association for AgriCulture and Ecology, along with researchers from the University of Göttingen, has developed an open-source seed (OSS) licence that can be applied to new crop varieties. The OSS licence prevents seeds and their derivatives from being privatised, patented or otherwise protected in a way that would limit their sale or further modification. In doing so, it ensures that new varieties are available to everyone. Alongside the licence, the organisation OpenSourceSeeds supports breeders and seed producers who use it.

  • Aptiv Releases Comprehensive Open-Source Automated Vehicle Data Set

    Aptiv has released a comprehensive set of automated driving training data including camera, radar and lidar signals that has been fully annotated and labeled.

  • Aptiv Releases Comprehensive Open-Source Dataset for Autonomous Driving

    Global auto parts supplier Aptiv, formally known as Delphi Automotive, announced today the full release of nuScenes, an open-source autonomous vehicle (AV) dataset. The dataset will help developers improve the safety of autonomous vehicles.

  • MIPS R6 Architecture Now Available for Open Use

    Asked if any other MIPS cores – beyond R6 – will be available in the future, Swift said additional announcements are in the offing, indicating that Thursday’s offering is only the first set of MIPS Open’s release.  

    “Remember, this is a journey, not a destination,” Swift reminded.

    Other pending announcements include MIPS Open’s certification partners and MIPS Open Advisory Board. Names of individuals or companies for those initiatives are not yet public.

  • Wave Computing launches MIPS Open, provides royalty-free access to chip design data

    A few months after announcing plans to “open source its MIPS instruction set architecture,” the folks at Wave Computing are following through. Mostly.

    The company has launched the MIPS Open program and released the first components, offering developers royalty and license fee-free access to the latest versions of its 32-bit and 64-bit MIPS architecture.

    But it’s questionable whether this is truly an “open source” initiative, so much as an “open use” project designed encourage developers to work with the company’s chips.

DragonFlyBSD Receives Initial FUSE Port For File-Systems In User-Space

Filed under
BSD

Tomohiro Kusumi has contributed an initial FUSE implementation to DragonFlyBSD for implementing file-systems in user-space support.

The design is based roughly on FreeBSD code but is a cleanly written implementation for allowing user-space file-systems to work on this BSD. This initial FUSE support isn't designed to be API/ABI compatible with the FreeBSD code due to different sysctls and other factors.

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Nate Graham's KDE Usability & Productivity Weekly Report

Filed under
KDE
  • KDE Usability & Productivity: Week 64

    Week 64 in KDE’s Usability & Productivity initiative has arrived, and I think you’ll see why this week needed two posts.

  • KDE's Konsole Now Supports Splitting, Plasma Vault Integration In Dolphin

    KDE contributor Nate Graham has continued his weekly blog posts outlining some of the notable improvements made in the world of KDE. One of the notable changes this week is the Konsole terminal emulator allowing arbitrary grid-like splits of a single window. That honors a ten year old bug report about wanting to restore support for "Quadkonsole" for allowing several consoles to render within a single window. That support is finally in place for the KDE Applications 19.08 release due out this summer.

Software: Python IDEs, Kodi, Best alternatives to Skype

Filed under
Software
  • 9 Best Free Python Integrated Development Environments (Updated 2019)

    Python is a widely used general-purpose, high level programming language. It’s easy to read and learn. It’s frequently used for science, data analysis, and engineering. With a burgeoning scientific community and ecosystem, Python is an excellent environment for students, scientists and organizations that develop technology software.

    One of the essential tools for a budding Python developer is a good Integrated Development Environment (IDE). An IDE is a software application that provides comprehensive facilities to programmers for software development.

    Many coders learn to code using a text editor. And many professional Python developers prefer to stay with their favourite text editor, in part because a lot of text editors can be used as a development environment by making use of plugins. But many Python developers migrate to an IDE as this type of software application offers, above all else, practicality. They make coding easier, can offer significant time savings with features like autocompletion, and built-in refactoring code, and also reduces context switching. For example, IDEs have semantic knowledge of the programming language which highlights coding problems while typing. Compiling is ‘on the fly’ and debugging is integrated.

  • Are free VPNs any good for Kodi?

    Before we get to the VPNs, let's start with Kodi, which is a free and open source media player.

  • What Is Kodi and How Does It Work?

    What is Kodi? Imagine your own version of Netflix or Amazon Prime Video, but one that is completely free? Sounds too good to be true, right?

  • Best alternatives to Skype 2019: paid and free

    If you're looking for the best Skype alternatives, then you've come to the right place. For many years, Skype has been one of the most popular VoIP (Voice over IP) services, with home and business users alike using it to video and voice call friends and family over the world.

    However, in 2011 Microsoft acquired Skype, and since then it has been tweaking the interface and adding (and removing features) which has not been too popular.

    So, if you're looking to move from Skype to another VoIP service, then this guide to the best Skype alternatives will help you make the leap. We look at both free alternatives to Skype, as well as packages you need to pay for, which is good for large companies with employees around the world.

Linux laptops alive in South Africa

Filed under
Linux

While it may serve a small niche in South Africa, Dell has been offering laptops that run Ubuntu Linux for years.

This is according to Chris Buchanan, client solutions director at Dell EMC in South Africa.

Dell and Canonical recently announced the new version of the Dell XPS 13 Developer Edition laptop, offering up to 16GB RAM and a 1TB SSB. Since then, a 2TB version has become available.

Like other Developer Edition variants of the Dell XPS 13, the 2018 model comes with Ubuntu Linux rather than Windows. At the time, the latest long-term support release: Ubuntu 18.04 “Bionic Beaver”.

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More in Tux Machines

Norbert Preining: Switching from KDE/Plasma to Gnome3 for one week

Honestly, I can’t agree more. I have tried Gnome3 for over a year, again and again, and it feels like a block of concrete put onto the feet of dissidents by Italian mafia bosses. It drowns and kills you. Read more

KDE's 20.08 Apps Updates: New Features land in Dolphin, digiKam, KStars, Konsole and More

The updates to KDE apps released today are many, contain a wide array of changes, and cover an impressive number of applications. Dolphin, KDE's file explorer, for example, adds previews for more types of files and improvements to the way long names are summarized, allowing you to better see what each file is or does. Dolphin also improves the way you can reach files and directories on remote machines, making working from home a much smoother experience. It also remembers the location you were viewing the last time you closed it, making it easier to pick up from where you left off. Read more

Intel Graphics and oneAPI

  • Intel Offers New Xe Graphics Details, Product Updates At 2020 Architecture Day

    This week Intel held their 2020 Architecture Day, albeit virtual due to the COVID-19 pandemic. A lot of interesting technical information was shared on both the hardware and software sides. Here are some of the interesting highlights.

  • Intel Is Using IGC In Their Windows Drivers, Internal Prototype For Mesa

    At Intel's Architecture Day this week the company was talking about work on their new Windows graphics driver that is being timed for Xe but supporting existing generations of hardware as well. One of the interesting takeaways was seeing the Windows driver is now using the open-source "IGC" back-end.

  • Intel oneAPI 1.0 "Gold" Is Coming Later This Year

    Recently I wrote about it looking like oneAPI 1.0 was lining up and now there is further confirmation of the first production release of this Intel software collection indeed coming this year. After oneAPI was announced in late 2018 at Intel's Architecture Day, it was released in early form last year and the various software components making up this collection of interfaces to exploit the potential of Intel's diverse hardware offerings have continued to advance.

Laravel for Programming (New Series)

  • Why Should I Use Laravel Framework
  • Composer Error while installing Laravel “Failed to decode response: zlib_decode(): data error
  • Mysql update or insert multiple rows – Raw Laravel SQL
  • Laravel update model with unique validation rule for attribute

    I have a Laravel User model whre I added unique validation rule on username and email. Now when I update my User through my Repo, and I want to re-validate my model, I get an error.

  • Laravel – Eloquent “Has”, “With”, “WhereHas”

    with() is generally used with eager loading, which is a quick way to pull related models. Basically, it means that, along with the main model, Laravel will preload the listed relationship(s). This is beneficial when you need to load additional data and want to avoid making N+1 DB bad practices. With eager loading, you run only one additional DB query instead of potentially hundreds of additional queries.

  • Getting a 500 Internal Server Error on Laravel 5+ Ubuntu 14.04

    This is the first time I am installing Laravel on Ubuntu and I am already running into issues, 500 errors. I have done it before, numerous times on Windows OS and never had an issue. This 500 internal server usually happens when your “mod_rewrite” module is not turned on.

  • Ajax Laravel 419 POST Error

    I would really be thankful if someone could help me with this. I am trying to make an Ajax call but I am getting 419 POST error.

  • Creating a Radio Button Input Field

    You want to create a radio button field for your Blade template.

  • Decoding HTML Entities to a String
  • 13 Best Laravel Helpers To Consider Using

    Laravel comes with a ton of useful global helper functions. If you haven’t used them so far, this is the best time to start. Over the years of me using the Laravel, 10 of those emerged as the most useful, making the development a lot easier. Sometimes we don’t really see how we can apply some methods until we see an example. So let’s get down to it and see the top 10 helpers I often use the most. These go for Laravel 5.*, however those on Laravel 6.* can bring these back using the following package https://github.com/laravel/helpers. You can also check out the official documentation for all laravel helper functions.

  • How to use Laravel with Socket.IO

    Websockets are cool. They are really helpful if you want to show real-time activities from your users (or perhaps some queue jobs). Now, if you are afraid of the word “Websockets”, don’t be. I will lay down the instructions on how you can use it and will be around to answer your questions if you need to. I had this challenge where I needed it to show a list of people who are currently viewing a specific URL in Laravel. So I started thinking. Part of me wanted to do a quick hack (luckily that’s not the strongest side of mine). Whilst the other wanted to build something cool, reusable and long-lasting.

  • Guide To Injecting Dependencies Into Controllers

    Laravel’s facades present a simple interface to the most useful classes in Laravel’s codebase. You can get information about the current request and user input, the session, caches, and much more. But if you prefer to inject your dependencies, or if you want to use a service that doesn’t have a facade, you’ll need to find some way to bring instances of these classes into your controller. All controller methods (including the constructors) are resolved out of Laravel’s container, which means anything you typehint that the container knows how to resolve will be automatically injected.

  • How to Upload Multiple Files via Ajax (VueJs and Laravel 5.5) - File Management

    When I first started using VueJs, it was a nightmare to find a decent tutorial on how to upload a single file using Ajax, let alone a tutorial explaining how to manage multiple files. I have been dealing a couple of years with file management, mostly using VueJs and Laravel, so I thought writing a tutorial like this could help a lot of developers implement one of the coolest things in applications, which is real-time asset management. First off, you will find many solutions online that are good but those who are early beginners will definitely struggle. What I will cover here is writing your frontend and backend code that will allow you to upload multiple files. Additionally, I will give you a few tricks on how to apply this stuff to different situations.