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Programming Leftovers (LLVM Clang, R, Perl and Python)

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  • Arm Cortex-A77 Support Upstreamed Finally To LLVM Clang 11

    While the Arm Cortex-A77 was announced last year and already has been succeeded by the Cortex-A78 announcement, support for the A77 has finally been upstreamed to the LLVM Clang compiler.

    The Cortex-A77 support was added to the GCC compiler last year while seemingly as an oversight the A77 support wasn't added to LLVM/Clang until this week.

  • Dirk Eddelbuettel: Rcpp now used by 2000 CRAN packages–and one in eight!

    As of yesterday, Rcpp stands at exactly 2000 reverse-dependencies on CRAN. The graph on the left depicts the growth of Rcpp usage (as measured by Depends, Imports and LinkingTo, but excluding Suggests) over time.

    Rcpp was first released in November 2008. It probably cleared 50 packages around three years later in December 2011, 100 packages in January 2013, 200 packages in April 2014, and 300 packages in November 2014. It passed 400 packages in June 2015 (when I tweeted about it), 500 packages in late October 2015, 600 packages in March 2016, 700 packages last July 2016, 800 packages last October 2016, 900 packages early January 2017, 1000 packages in April 2017, 1250 packages in November 2017, 1500 packages in November 2018 and then 1750 packages last August. The chart extends to the very beginning via manually compiled data from CRANberries and checked with crandb. The next part uses manually saved entries. The core (and by far largest) part of the data set was generated semi-automatically via a short script appending updates to a small file-based backend. A list of packages using Rcpp is available too.

  • YouTube: The [Perl] Weekly Challenge - 067
  • The [Perl] Weekly Challenge #067

    This week both tasks had one thing in common i.e. pairing two or more list. In the past, I have taken the help from CPAN module Algorithm::Combinatorics for such tasks.

  • Weekly Python StackOverflow Report: (ccxxxiv) stackoverflow python report
  • Flask project setup: TDD, Docker, Postgres and more - Part 1

    There are tons of tutorials on Internet that tech you how to use a web framework and how to create Web applications, and many of these cover Flask, first of all the impressive Flask Mega-Tutorial by Miguel Grinberg (thanks Miguel!).
    Why another tutorial, then? Recently I started working on a small personal project and decided that it was a good chance to refresh my knowledge of the framework. For this reason I temporarily dropped the clean architecture I often recommend, and started from scratch following some tutorials. My development environment quickly became very messy, and after a while I realised I was very unsatisfied by the global setup.
    So, I decided to start from scratch again, this time writing down some requirements I want from my development setup. I also know very well how complicated the deploy of an application in production can be, so I want my setup to be "deploy-friendly" as much as possible. Having seen too many project suffer from legacy setups, and knowing that many times such issues can be avoided with a minimum amount of planning, I thought this might be interesting for other developers as well. I consider this setup by no means better than others, it simply addresses different concerns.

More in Tux Machines

Optimised authentication methods for Ubuntu Desktop

Still counting on passwords to protect your workstation? When set up properly, alternatives to passwords provide a streamlined user experience while significantly improving security. These alternative authentication methods can also easily be combined to create a custom and adaptive authentication profile. This whitepaper introduces three popular authentication methods that provide a solid alternative to passwords. Perhaps you’d like to configure your laptop for login using a YubiKey hardware token connected to a dock. Another option could be to login with a Duo push notification when not connected to the dock, but use a Google Authenticator one-time password when no network is available. Maybe you need a separate hardware token just for ssh authentication, and you always need to keep a long, complex password for emergency authentication should all other methods fail. All of these scenarios can be easily configured within Ubuntu. Read more

Open Hardware: Arduino, RISC-V and 96Boards

  • Arduino-controlled robot arm is ready to play you in a game of chess

    If you’re tired of playing chess on a screen, then perhaps you could create a robotic opponent like Instructables user Michalsky. The augmented board runs micro-Max source code, enabling chess logic to be executed on an Arduino Mega with room for control functions for a 6DOF robotic arm. The setup uses magnetic pieces, allowing it to pick up human moves via an array of 64 reed switches underneath, along with a couple shift registers. The Mega powers the robot arm accordingly, lifting the appropriate piece and placing it on the correct square.

  • New RISC-V CTO On Open Source Chip Architecture’s Global Data Center Momentum

    With more big international players on board, the foundation's new head of technology sees signs of "state of the art moving forward."

  • Snapdragon 410 based 96Boards CE SBC gets an upgrade

    Geniatech has launched a Linux-ready, $109 “Developer Board 4 V3” compliant with 96Boards CE that offers a Snapdragon 410E, GbE, 3x USB, 802.11ac, GPS, and-25 to 70°C support. Geniatech has released a V3 edition of its 96Boards CE form-factor Developer Board 4 SBC, the third update of the Development Board IV we covered back in 2016. Starting at $109, the Developer Board 4 V3 still runs Linux, Android, and Windows 10 IoT Core on Qualcomm’s 1.2GHz, quad -A53 Snapdragon 410m, although it has been upgraded to the 10-year availability Snapdragon 410E. Geniatech also sells a line of Rockchip based SBCs, among other embedded products.

Audiocasts/Shows: Linux in the Ham Shack and Linux Headlines

  • LHS Episode #360: Zapped

    Welcome to the 360th episode of Linux in the Ham Shack. In this short-topic show, the hosts discuss 1.2GHz distance records, a hybrid antenna for geosynchronous satellite operation, data mode identification for your smart phone, being pwned, Ubuntu 20.04.1, LibreOffice, HamClock and much more. Thanks for listening and hope you have a great week.

  • LHS Episode #361: The Weekender LIV

    It's time once again for The Weekender. This is our bi-weekly departure into the world of amateur radio contests, open source conventions, special events, listener challenges, hedonism and just plain fun. Thanks for listening and, if you happen to get a chance, feel free to call us or e-mail and send us some feedback. Tell us how we're doing. We'd love to hear from you.

  • 2020-08-14 | Linux Headlines

    Google could be extending its Firefox search royalty deal, PyPy leaves the Software Freedom Conservancy, Ubuntu puts out a call for testing, Linspire removes snapd support, Microsoft showcases its open source contributions, and Facebook joins The Linux Foundation.

Python Programming

  • Django Weblog: DjangoCon Australia 2020: Schedule live and tickets on sale

    The 8th DjangoCon AU was scheduled to be run in Adelaide, South Australia this year. It's been moved to an online event and will take place on September 4th. DjangoCon AU is organized as a specialist track as part of PyConline AU. The schedule — though shorter than in previous years — is packed with talks about best practices, communities, contributions, and the present and future of Django. Since the event was due to run in Adelaide, the event is running in Australian Central Standard Time, UTC+9:30, and DjangoCon AU will start at 3:45pm ACST. This link shows when the DjangoCon AU Opening address starts for all the DjangoCon timezones..

  • Return how many times each letter shows up in the string by using an asterisk (*)

    Hello people, in this article we will solve the below python problem. You receive the name of a city as a string, and you need to return a string that shows how many times each letter shows up in the string by using an asterisk (*).

  • The Real Python Podcast – Episode #22: Create Cross-Platform Python GUI Apps With BeeWare

    Do you want to distribute your Python applications to other users who don't have or even use Python? Maybe you're interested in seeing your Python application run on iOS or Android mobile devices. This week on the show we have Russell Keith-Magee, the founder and maintainer of the BeeWare project. Russell talks about Briefcase, a tool that converts a Python application into native installers on macOS, Windows, Linux, and mobile devices.

  • Python vs R: Which is Good for Machine Learning?

    If you want to build a machine learning project and are stuck between choosing the right programming language to build it, you know you have come to the right place. This blog will not only help you understand the difference between the two languages namely: Python and R; but also help you know which language has an edge over one another in multiple aspects. So without wasting a single moment, let’s dive into it!

  • Freezegun - Real Joy for Fake Dates in Python

    If you've ever tested code involving dates and times in Python you've probably had to mock the datetime module. And if you've mocked the datetime module, at some point it probably mocked you back when your tests failed.

  • Mastering the SQLite Database in Python

    In this tutorial, we shall see some advanced tasks associated with the SQLite database from Python. We shall see topics such as inserting images, Listing the tables, Backup a database, Dumping Rollback in SQLite, Deleting records from a table, Dropping a table, SQLite database exceptions, and more.

  • PSF GSoC students blogs: Week 6 Blog Post
  • Top 10 Important Uses cases of Python in the Real World

    These top 10 Python uses cases in the real world prove how effective the programming language is. Read the real life uses of Python and implement it in your organization.