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Programming: LLVM Clang 10, GCC 9.2 Released, Python and C

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  • Intel Tiger Lake Support Added To The LLVM Clang 10 Compiler

    We have seen Intel's compiler gurus contributing new enablement patches for Tiger Lake support with GCC 10 due out next year while now they have also landed their initial Tiger Lake support into the LLVM Clang 10 code compiler also due out in H1'2020.

    With the newest LLVM/Clang compiler code as of overnight, -march=tigerlake is now supported for targeting this Icelake successor to be manufactured on a 10nm+ process.

  • GCC 9.2

    The GNU project and the GCC developers are pleased to announce the release of GCC 9.2.

    This release is a bug-fix release, containing fixes for regressions in GCC 9.1 relative to previous releases of GCC.

  • GCC 9.2 Released With Bug Fixes & AMD Zen 2 Improvements

    The GNU toolchain crew released today GCC 9.2 as the newest stable release to their compiler stack.

    GCC 9.2 offers up just bug/regression fixes over the original GCC9 (GCC 9.1) stable release from back in May. One notable item back-ported though from GCC 10 are the AMD Zen 2 improvements for the "-march=znver2" with the new scheduler model and updated cost table for yielding more performant binaries when targeting for these latest-generation EPYC/Ryzen processors.

  • How I built a Python text app
  • Erik Marsja: Repeated Measures ANOVA in R and Python using afex & pingouin

    In this post we will learn how to carry out repeated measures Analysis of Variance (ANOVA) in R and Python. To be specific, we will use the R package afex and the Python package pingouin to carry out one-way and two-way ANOVA f or within subject’s design. The structure of the following data analysis tutorial is as follows; a brief introduction to (repeated measures) ANOVA, carrying out within-subjects ANOVA in R using afex and in Python using pingouin. In the end, there will be a comparison of the results and the pros and cons using R or Python for data analysis (i.e., ANOVA).

  • Efficient string copying and concatenation in C

    The design of returning the functions’ first argument is sometimes questioned by users wondering about its purpose–see for example strcpy() return value, or C: Why does strcpy return its argument? The simple answer is that it’s due to a historical accident. The first subset of the functions was introduced in the Seventh Edition of UNIX in 1979 and consisted of strcat, strncat, strcpy, and strncpy. Even though all four functions were used in the implementation of UNIX, some extensively, none of their calls made use of their return value. The functions could have just as easily, and as it turns out, far more usefully, been defined to return a pointer to the last copied character, or just past it.

    The optimal complexity of concatenating two or more strings is linear in the number of characters. But, as mentioned above, having the functions return the destination pointer leads to the operation being significantly less than optimally efficient. The functions traverse the source and destination sequences and obtain the pointers to the end of both. The pointers point either at or just past the terminating NUL ('\0') character that the functions (with the exception of strncpy) append to the destination. However, by returning a pointer to the first character rather than the last (or one just past it), the position of the NUL character is lost and must be computed again when it’s needed. This inefficiency can be illustrated on an example concatenating two strings, s1 and s2, into the destination buffer d. The idiomatic (though far from ideal) way to append two strings is by calling the strcpy and strcat functions as follows.

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    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

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.