Development: bzip2, curl, debci and programming leftovers (C++, Python etc.)
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Preparing the bzip2-1.0.7 release
From bzip2-1.0.1 (from the year 2000), until bzip2-1.0.6 (from 2010), release tarballs came with a special Makefile-libbz2_so to generate a shared library instead of a static one.
This never used libtool or anything; it specified linker flags by hand. Various distributions either patched this special makefile, or replaced it by another one, or outright replaced the complete build system for a different one.
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Bzip2 Is About To See Its First Real Update In Close To A Decade
The Bzip2 open-source compression program is about to see its first real release since September 2010. This new version brings new build systems, security fixes, and much more.
Earlier this month we wrote about Bzip2 seeing a revival under new maintainership. With Federico Mena-Quintero having taken the reigns from Bzip2 creator Julian Seward, he's busy working on this imminent 1.0.7 release as well as longer-term plans like potentially porting parts of the program to Rust.
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Kids can be so crurl: Lead dev unchuffed with Google's plan to remake curl in its own image
Google is planning to reimplement parts of libcurl, a widely used open-source file transfer library, as a wrapper for Chromium's networking API – but curl's lead developer does not welcome the "competition".
Issue 973603 in the Chromium bug tracker describes libcrurl,"a wrapper library for the libcurl easy interface implemented via Cronet API".
Cronet is the Chromium network stack, used not only by Google's browser but also available to Android applications.
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Java and JavaScript remain the most popular programming languages
That's according to State of Developer Ecosystem report out of JetBrains, which saw the firm survey 7,000 coders about key industry trends. The main takeaways are that Java is the most popular primary programming language; JavaScript is the most used overall; Go is the most promising; and Python is the most studied.
69 per cent of developers (nice) have used JavaScript over the past 12 months, followed by HTML/CSS (61 per cent), SQL (56 per cent), Java (50 per cent), Python (49 per cent) and Shell scripting languages (40 per cent).
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Candy Tsai: Outreachy Week 5: What is debci?
After being asked sooo many times what am I doing for this internship, I think I never explained it well enough so that others could understand. Let me give it a try here.
debci is short for “Debian Continuous Integration”, so I’ll start with a short definition of what “Continuous Integration” is then!
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Token Based Authentication for Django Rest Framework
Django is of the popular web development framework based on python having a large community and is used by many top websites presently. And Django Rest Framework, one of the most popular python package meant for Django to develop rest api’s and it made things really easier from authentication to responses each and everything.
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Report from February 2019 ISO WG21 C++ Standards Committee Meeting
The February 2019 ISO C++ meeting was held in Kailua-Kona, Hawaii. As usual, Red Hat sent three of us to the meeting: I attended in the SG1 (parallelism and concurrency) group, Jonathan Wakely in Library, and Jason Merrill in the Core Working Group (see Jason’s report here). In this report, I’ll cover a few highlights of the meeting, focusing on the papers that were discussed.
The first part of the week in SG1 was spent primarily on papers related to the Executors proposal (p0443). First up was “Integrating executors with the parallel algorithms” (p1019). SG1 also saw this paper at the Fall WG21 meeting in San Diego (see my Fall 2018 trip report). Much of the discussion around this paper in Kona centered on whether supplying an executor to an algorithm required that the algorithm must execute on the supplied executor. Currently, execution policies are just hints to the algorithm, and the algorithm is free to ignore the hint (e.g., some algorithms have no profitable parallelization, or parallelization may not be profitable for small input ranges, so an algorithm may ignore the user’s request for parallelization).
We also spent some time trying to get a clearer definition of what counts as a Thread of Execution (ToE) in the context of p1019 (e.g., does a ToE imply TLS? What about fibers, SIMD lanes, etc.?) and the standard parallel algorithms, as well as how exceptions might be handled. Currently, exceptions in parallel algorithms terminate the calling program. The consensus was that we’d like to aim for executors supplied to algorithms to require that the algorithm strictly execute on the supplied executor. The author was asked to work on a subsequent revision of the paper with this guidance in mind. No conclusions were reached on the topic of exception propagation or what specifically constitutes a ToE in this context.
Next, there was a brief discussion on an experience report I wrote for the Fall meeting (p1192). I had no new information on this paper for Kona but expect to bring either an update or a new paper based on work I will be doing to replace the default execution backend of the libstdc++ implementation of parallel algorithms from Intel’s Thread Building Blocks to a backend based on OpenMP.
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3D – Interactions with Qt, KUESA and Qt Design Studio, Part 1
I’m a 3D designer, mostly working in blender. Sometimes I come across interesting problems and I’ll try to share those here. For example, trying to display things on low-end hardware – where memory is sometimes limited, meaning every polygon and triangle counts; where the renderer doesn’t do what the designer wants it to, that sort of thing. The problem that I’ll cover today is, how to easily create a reflection in KUESA or Qt 3D Studio.
Neither KUESA or Qt 3D Studio will give you free reflections. If you know a little about 3D, you know that requires ray tracing software, not OpenGL. So, I wondered if there would be an easy way to create this effect. I mean, all that a reflection is, is a mirror of an object projected onto a plane, right? So, I wondered, could this be imitated?
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Linear Regression in Python
Linear Regression is a supervised statistical technique where we try to estimate the dependent variable with a given set of independent variables. We assume the relationship to be linear and our dependent variable must be continuous in nature.
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Announcing GitLabracadabra 0.2.1
Mid-October I started at work a tool in Python to create and update our projects hosted in our GitLab instance.
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Kubernetes 1.15 Releaased, Offensive Security Reveals the 2019-2020 Roadmap for Kali Linux, Canonical Releases a New Kernel Live Patch for Ubuntu 18.04 and 16.04 LTS, Vivaldi 2.6 Now Available, and Mathieu Parent Announces GitLabracadabra
Mathieu Parent today announces GitLabracadabra 0.2.1. He started working on the tool to in Python to create and update projects in GitLab. He notes that "This tool is still very young and documentation is sparse, but following the 'release early, release often' motto I think it is ready for general usage."
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Let’s Build A Simple Interpreter. Part 15.
Before moving on to topics of recognizing and interpreting procedure calls, let’s make some changes to improve our error reporting a bit. Up until now, if there was a problem getting a new token from text, parsing source code, or doing semantic analysis, a stack trace would be thrown right into your face with a very generic message. We can do better than that.
To provide better error messages pinpointing where in the code an issue happened, we need to add some features to our interpreter. Let’s do that and make some other changes along the way. This will make the interpreter more user friendly and give us an opportunity to flex our muscles after a “short” break in the series. It will also give us a chance to prepare for new features that we will be adding in future articles.
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