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Qt Creator 4.7.0

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Development
KDE
  • Qt Creator 4.7.0 released

    We are happy to announce the release of Qt Creator 4.7.0!

  • Qt Creator 4.7 Released With Clang Code Model Turned On By Default

    The Qt Company has officially released Qt Creator 4.7 as the newest feature release to this open-source, cross-platform Qt/C++ focused integrated development environment.

    Today's Qt Creator 4.7 IDE release is quite significant in that it finally turns on the Clang code model by default. The Clang code model provides significantly better C++ support over what was offered by their in-house code model and will stay better up-to-date with newer C/C++ standards, etc. The Clang code model in Qt Creator 4.7 is based on LLVM/Clang 6.0.

A Proposal To Allow Python Scripting Within The GCC Compiler, Replacing AWK

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Development
GNU

A SUSE developer is seeking feedback and interest on the possibility of allowing a scripting language -- most likely Python -- to be used within the GCC compiler code-base. This would primarily be used for replacing existing AWK scripts.

GCC developer Martin Liška at SUSE is seeking comments on the possibility of adding Python as an accepted language within the GCC code-base. This isn't anything along the likes of replacing existing GCC C compiler code into a scripting language or anything to that effect, but is targeting at replacing current AWK scripts that are hard to maintain.

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Ballerina reinvents cloud-native programming

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Development

Ballerina has been inspired by Java, Go, C, C++, Rust, Haskell, Kotlin, Dart, TypeScript, JavaScript, Swift, and other languages. It is an open source project, distributed under the Apache 2.0 license, and you can find its source code in the project's GitHub repository.

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Belated Thoughts on van Rossum’s Departure

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Development
  • Is BDFL a death sentence?

    A few days ago, Guido van Rossum, creator of the Python programming language and Benevolent Dictator For Life (BDFL) of the project, announced his intention to step away.

    Below is a portion of his message, although the entire email is not terribly long and worth taking the time to read if you’re interested in the circumstances leading to van Rossum’s departure.

  • Thoughts on Guido retiring as BDFL of Python

    I've been programming in Python for almost 20 years on a myriad of open source projects, tools for personal use, and work. I helped out with several PyCon US conferences and attended several others. I met a lot of amazing people who have influenced me as a person and as a programmer.

    I started PyVideo in March 2012. At a PyCon US after that (maybe 2015?), I found myself in an elevator with Guido and somehow we got to talking about PyVideo and he asked point-blank, "Why work on that?" I tried to explain what I was trying to do with it: create an index of conference videos across video sites, improve the meta-data, transcriptions, subtitles, feeds, etc. I remember he patiently listened to me and then said something along the lines of how it was a good thing to work on. I really appreciated that moment of validation. I think about it periodically. It was one of the reasons Sheila and I worked hard to transition PyVideo to a new group after we were burned out.

Opinion: GitHub vs GitLab

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Development
Microsoft

So, Microsoft bought GitHub, and many people are confused or worried. It's not a new phenomenon when any large company buys any smaller company, and people are right to be worried, although I argue that their timing is wrong. Like Microsoft, GitHub has made some useful contributions to free and open-source software, but let's not forget that GitHub's main product is proprietary software. And, it's not just some innocuous web service either; GitHub makes and sells a proprietary software package you can download and run on your own server called GitHub Enterprise (GHE).

Let's remember how we got here. BitMover made a tool called BitKeeper, a proprietary version control system that allowed free-of-charge licenses to free software projects. In 2002, the Linux kernel switched to using BitKeeper for its version control, although some notable developers made the noble choice to refuse to use the proprietary program. Many others did not, and for a number of years, kernel development was hampered by BitKeeper's restrictive noncommercial licenses.

In 2005, Andrew Tridgell, working at OSDL, developed a client that bypassed this restriction, and as a result, BitMover removed licenses to BitKeeper from all OSDL employees—including Linus Torvalds. Eventually, all non-commercial licenses were stopped, and new licenses included clauses preventing the development of alternative version control systems. As a result of this, two new projects were born: Mercurial and Git. Created in a few short weeks in 2005, Git quickly became the version control system for Linux development.

Proprietary version control tools aren't common in free software development, but proprietary collaboration websites have been around for some time. One of the earliest collaboration websites still around today is Sourceforge. Sourceforge was created in the late 1990s by VA Software, and the code behind the project was released in 2000.

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Programming: Perl, RcppClassic, Git-cinnabar, Effective Python

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Development
  • Confessions of a recovering Perl hacker

    My name's MikeCamel, and I'm a Perl hacker.

    There, I've said it. That's the first step.

    My handle on IRC, Twitter and pretty much everywhere else in the world is "MikeCamel." This is because, back in the day, when there were no chat apps—no apps at all, in fact—I was in a technical "chatroom" and the name "Mike" had been taken. I looked around, and the first thing I noticed on my desk was the Camel Book, the O'Reilly Perl Bible.

    I have the second edition now, but this was the first edition. Yesterday, I happened to pick up the second edition, the really thick one, to show someone on a video conference call, and it had a thin layer of dust on it. I was a little bit ashamed, but a little bit relieved as well.

  • RcppClassic 0.9.11

    A new maintenance release, now at version 0.9.11, of the RcppClassic package arrived earlier today on CRAN. This package provides a maintained version of the otherwise deprecated initial Rcpp API which no new projects should use as the normal Rcpp API is so much better.

  • Mike Hommey: Announcing git-cinnabar 0.5.0 beta 4

    Git-cinnabar is a git remote helper to interact with mercurial repositories. It allows to clone, pull and push from/to mercurial remote repositories, using git.

  • Russ Allbery: Review: Effective Python

Programming: Becoming a Senior Developer, DWG and a "New Phase" of Python

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Development
  • Becoming a senior developer: 9 experiences you'll encounter

    Being a developer—a good one—isn't just about writing code. To be successful, you do a lot of planning, you deal with catastrophes, and you prevent catastrophes. Not to mention you spend plenty of time working with other humans about what your code should do.

  • Revealing unknown DWG classes

    I implemented three major buzzwords today in some trivial ways.

        massive parallel processing
        asynchronous processing
        machine-learning: a self-improving program

    The problem is mostly trivial, and the solutions also. I need to
    reverse-engineer a binary closed file-format, but got some hints from
    a related ASCII file-format, DWG vs DXF.

  • Python and Its Community Enter a New Phase

    Python is an amazing programming language, there's no doubt about it. >From humble beginnings in 1991, it's now just about everywhere. Whether you're doing web development, system administration, test automation, devops or data science, odds are good that Python is playing a role in your work.

    Even if you're not using Python directly, odds are good that it is being used behind the scenes. Using OpenStack? Python plays an integral role in its development and configuration. Using Dropbox on your computer? Then you've got a copy of Python running on your computer. Using Linux? When I purchased Red Hat Linux back in 1995, the configuration was a breeze—thanks to visual tools developed in Python.

    And, of course, there are numerous schools and educational programs that are now teaching Python. MIT's intro computer science course switched several years ago from Scheme to Python, and thousands of universities all over the world made a similar switch in its wake. My 15-year-old daughter participates in a program for technology and entrepreneurship—and she's learning Python.

    There currently is an almost insatiable demand for Python developers. Indeed, Stack Overflow reported last year that Python is not only the most popular language on its site, but it's also the fastest-growing language. I can attest to this popularity in my own job as a freelance Python trainer. Some of the largest computer companies in the world are now using Python on a regular basis, and their use of the language is growing, not shrinking.

GCC 8.2 Compiler Will Be Releasing Soon

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Development
GNU

Developers behind the GNU Compiler Collection intend to get release preparations underway soon for the GCC 8.2 compiler.

GCC8 remains open for bug/regression fixes and documentation updates with GCC 8.2 due to be the first point release under the GCC versioning policy where the May release of GCC 8.1 marked the project's first stable feature release of GCC8. New feature development meanwhile remains focused on GCC 9, which will be released initially as GCC 9.1 around early 2019.

So to no surprise, GCC 8.2 is set to carry just various regression fixes primarily as more developers began trying out this annually updated compiler following the recent stable release.

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Programming: Go, Python, GCC, Git and Qt

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Development
  • Locks versus channels in concurrent Go

    In this article, a short look at goroutines, threads, and race conditions sets the scene for a look at two Go programs. In the first program, goroutines communicate through synchronized shared memory, and the second uses channels for the same purpose. The code is available from my website in a .zip file with a README.

  • Pete Zaitcev: Guido van Rossum steps down
  • Guido van Rossum Stepping Down from Role as Python's Benevolent Dictator For Life

    Python's Benevolent Dictator For Life (BDFL) Guido van Rossum today announced he's stepping down from the role.

    On the Python mailing list today, van Rossum said, "I would like to remove myself entirely from the decision process. I'll still be there for a while as an ordinary core dev, and I'll still be available to mentor people—possibly more available. But I'm basically giving myself a permanent vacation from being BDFL, and you all will be on your own."

  • GCC 8 Hasn't Been Performing As Fast As It Should For Skylake With "-march=native"

    It turns out that when using GCC 8 since April (or GCC 9 development code) if running on Intel Skylake (or newer architectures like the yet-to-be-out Cannonlake or Icelake) and compile your code with the "-march=native" flag for what should tune for your CPU microarchitecture's full capabilities, that hasn't entirely been the case. A fix is en route that can correct the performance by as much as 60%.

  • Upcoming git-crecord release

    More than 1½ years since the first release of git-crecord, I’m preparing a big update. Not aware how exactly many people are using it, I neglected the maintenance for some time, but last month I’ve decided I need to take action and fix some issues I’ve known since the first release.

  • Profiling memory usage on Linux with Qt Creator 4.7

    You may have heard about the Performance Analyzer (called “CPU Usage Analyzer” in Qt Creator 4.6 and earlier). It is all about profiling applications using the excellent “perf” tool on Linux. You can use it locally on a Linux-based desktop system or on various embedded devices. perf can record a variety of events that may occur in your application. Among these are cache misses, memory loads, context switches, or the most common one, CPU cycles, which periodically records a stack sample after a number of CPU cycles have passed. The resulting profile shows you what functions in your application take the most CPU cycles. This is the Performance Analyzer’s most prominent use case, at least so far.

Python language founder steps down

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Development
  • ​Python language founder steps down

    After almost 30 years of overseeing the development of the world's most popular language, Python, its founder and "Benevolent Dictator For Life" (BDFL), Guido van Rossum, has decided he would like to remove myself entirely from the decision process.

    Van Rossum isn't leaving Python entirely. He said, "I'll still be there for a while as an ordinary core dev, and I'll still be available to mentor people -- possibly more available."

  • Guido van Rossum resigns as Python leader

    Python creator and Benevolent Leader for Life Guido van Rossum has decided, in the wake of the difficult PEP 572 discussion, to step down from his leadership of the project.

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today's howtos

Graphics: ROCm, AMD, Mesa, Sway

  • ROCm 1.8.2 Released For The Open-Source Radeon Linux Compute Stack
    While waiting for the big ROCm 1.9 update, another point release to the ROCm 1.8 series is available for this Radeon Open Compute stack. Earlier this month the AMD developers working on this Linux open-source OpenCL/compute stack pushed out the ROCm 1.8.2 beta while today it was elevated to the stable channel. Details on the ROCm 1.8.2 update are unfortunately light, but based upon user reports, it seems to be able to create a working environment on Ubuntu 18.04 LTS if paired with a newer kernel. But the official Ubuntu 18.04 LTS isn't coming until ROCm 1.9.
  • Raven Ridge APUs Get Minor Performance Boost With Latest RADV Vulkan Driver
    The Raven Ridge Linux support continues to maturing. The latest on these Zen+Vega APUs using the open-source AMD Radeon Linux graphics driver stack should be slightly better performance when using the RADV Vulkan driver. RADV co-founder Bas Nieuwenhuizen landed a number of commits on Wednesday to further enhance this Mesa-based Radeon Vulkan driver. With this latest work, he's now enabled binning and DFSM by default for Raven Ridge hardware. With this being enabled now for Raven, he's found a minor performance in the range of 2~3% for some demos and games tested.
  • Freedreno Gallium3D Now Exposes Adreno A5xx Performance Counters
    It's been a while since last having any news to report on Freedrenon, the open-source, community-driven Gallium3D driver for providing accelerated 3D support for Qualcomm Adreno graphics hardware. But ahead of the upcoming Mesa 18.2 feature freeze, Freedreno founder Rob Clark has been landing a number of improvements.
  • Sway 1.0 Alpha 4 Released With Real-Time Video Capture, Atomic Layout Updates
    Learn more about the Sway 1.0 Alpha 4 release via the GitHub release announcement.

Kdenlive 18.08 Beta – Film Noir

Kdenlive is my video editor de jour since the dawn of civilization, or rather, as far back as my video editing attempts go. Pretty much all of the clips I uploaded to my Youtube channel were made using Kdenlive, with only some extra work in other programs. Kdenlive is powerful, flexible, useful, and now there’s a new beta that promises many good things and delights. The 18.08 version can be found under the label Refactoring Branch – sounds like an avantguard field of mathematics – and it is distributed as a self-contained AppImage, meaning you just need to make the file executable and then run it (single- or double-click). Which is exactly what I did. Follow me. Read more

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