• On higher education, programmers and blue-collar job



      “Sometimes it happens that a man’s circle of horizon becomes smaller and smaller, and as the radius approaches zero it concentrates on one point. And then that becomes his point of view.”

      David Hilbert
      “When I thought I had hit rock bottom, someone knocked from below.”

      Stanisław Jerzy Lec

      Preface


      Does a programmer need a higher education? The flow of opinions on this undoubtedly urgent topic has not dried up, so I have decided to express my view. It seems to me the general disappointment in education is due to the numerous processes and changes in the profession and it needs serious study. Below I will discuss the most common misconceptions, myths, and underlying causes of the phenomenon.
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    • How Brands Can Break Through the Tech Media Bubble

        Good luck getting people to read your branded tech story. Now, before you get mad, I’m sure you’ve got something great to share. I’m sure you found an exciting new solution to some sort of problem. All you want is for others to be as excited about it as you are. Sadly, the odds are not in your favour.

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      • Kalman Filter

        • Translation
        • Tutorial


        There are a lot of different articles on Kalman filter, but it is difficult to find the one which contains an explanation, where all filtering formulas come from. I think that without understanding of that this science becomes completely non understandable. In this article I will try to explain everything in a simple way.

        Kalman filter is very powerful tool for filtering of different kinds of data. The main idea behind this that one should use an information about the physical process. For example, if you are filtering data from a car’s speedometer then its inertia give you a right to treat a big speed deviation as a measuring error. Kalman filter is also interesting by the fact that in some way it is the best filter. We will discuss precisely what does it mean. In the end of the article I will show how it is possible to simplify the formulas.
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      • Info Desk: «Internet Archive» — history, mission and subsidiary projects

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        Probably, there are not so many users on Habr who have never heard about the «Internet Archive», a service that searches and stores the digital data that is important for all mankind, whether it be the Internet pages, books, videos or other type of information.

        Who manages the Internet archive, when it appeared and what is its mission? Read about it in the today's «Inquiry».
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      • Researchers from MIT designed «rectenna» which converts Wi-Fi signals into electricity


          Source: eeNews Europe

          I'm glad that Habr got brand new English version. And my first post in English is about new MIT project. Researchers designed an ultra-low capacitance and ultra-low resistance Schottky diode capable of switching at GHz frequencies. This diode is able rectify and convert random WiFi signals into DC electricity.

          MoS2 «rectenna» (this is how scientists called their invention) could become the main element of roll-to-roll process to cover a huge areas. To be fair antennas capable transform radio signals in to electricity is not a new thing. The main achievement of MIT engineers is creation of soft rectenna made from special alloy.
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        • Full-stack developers are in fact stuck at mid-level. Spare yourself from suffering – don’t go down that path

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          Back in those times when I just started learning how to code, I trusted the old wise weasels with their “Programming languages don’t matter” mantra. I grew obsessed with the idea of some day becoming a developer who can do just anything. That guy who transfers his experience from one technology to another and transcends the minutia. But that idea failed miserably.

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        • The VS Code Roadmap 2019 — DRAFT

            As 2018 has come to an end, now is the time to look towards the future. We typically look out 6 to 12 months and establish topics we want to work on.


            As we go we learn and our assessment of some of the topics listed changes. Thus, we may add or drop topics as we go.


            We describe some initiatives as «investigations» which means our goal in the next few months is to better understand the problem and potential solutions before scheduling actual feature work. Once an investigation is done, we will update our plan, either deferring the initiative or committing to it.


            As always, we will listen to your feedback and adapt our plans if needed.


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          • Writing yet another Kubernetes templating tool


              If you are working with Kubernetes environment then you probably make use of several existing templating tools, some of them being a part of package managers such as Helm or Ksonnet, or just templating languages (Jinja2, Go template etc.). All of them have their own drawbacks as well as advantages and we are going to go through them and write our own tool that will try to combine the best features.

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            • Monitoring System for Windows servers on pure SQL, and how I had secretly dragged it into the Production

                A long time ago in a galaxy far, far away there was a company grown from a startup to something much bigger, but for a while the IT department was still compact and very efficient. That company hosted on prem hundreds of virtual Windows servers, and of course these servers were monitored. Even before I joined the company, NetIQ had been chosen as a monitoring solution.

                One of my new tasks was to support NetIQ. The person, who worked with NetIQ before, said a lot about his experience with NetIQ, unfortunately, if I try to put it here it would be just a long line of ‘****’ characters. Soon I realized why. Steve Jobs is probably spinning in his grave looking at the interface like this:

                image
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              • Real-time Chat Solutions vs Chat Platforms — Make Your Choice

                It’s More Than You Imagine…

                The possibility of acquiring more profit through a chat app solution is gaining popularity than adopting to monthly plans based chat platforms


                With the rise of instant conversation among the users, it's not surprising that the global mobile messaging app is estimated to reach around 2.1 billion active users by 2020. When the communication lies as the significant action in nature, then in fact the underlying tool “messaging application” also acquires the same importance. Thus, every chat platforms like WhatsApp demand a great market value according to the features and functionalities listed. Most of the business professionals and enterprises are urged to rely on subscription-based plans to avail such messaging platform.
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              • Valentine's Day Application on Libgdx

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                Every year there are a lot of articles dedicated to Valentine's Day. I also decided to get involved in this topic and create something original and unusual. The idea was to create a simple Android application with hearts that would have their physical models and interact with each other. Then I added text, sounds, particles and some other effects. The resulting app was working and quite original! In this article I will describe the creation process, as well as the capabilities and pitfalls of the libgdx library.


                Valentines Day Hearts.

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              • The Game of Archetypes: How Storytelling Works for Tech Brands

                  How’s your work week going? I took some time off publishing new articles and consulting clients to look at «The Hero and the Outlaw» by Carol Pearson and Margaret Mark. It’s a guide to leveraging the power of archetypes for your brand, and I think there’s much to learn from it.

                  Archetypes are properly defined as «universal constructs of the human psyche». In layman’s terms, these are images we all recognise because they’re built into our subconscious mind. One such example is the archetype of the hero  —  a good guy who triumphs over evil and saves the day.

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                • Memory and Span pt.1

                    Starting from .NET Core 2.0 and .NET Framework 4.5 we can use new data types: Span and Memory. To use them, you just need to install the System.Memory nuget package:


                    PM> Install-Package System.Memory

                    These data types are notable because the CLR team has done a great job to implement their special support inside the code of .NET Core 2.1+ JIT compiler by embedding these data types right into the core. What kind of data types are these and why are they worth a whole chapter?


                    If we talk about problems that made these types appear, I should name three of them. The first one is unmanaged code.


                    Both the language and the platform have existed for many years along with means to work with unmanaged code. So, why release another API to work with unmanaged code if the former basically existed for many years? To answer this question, we should understand what we lacked before.


                    This chapter was translated from Russian jointly by author and by professional translators. You can help us with translation from Russian or English into any other language, primarily into Chinese or German.

                    Also, if you want thank us, the best way you can do that is to give us a star on github or to fork repository github/sidristij/dotnetbook.
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                  • Bluetooth stack modifications to improve audio quality on headphones without AAC, aptX, or LDAC codecs

                      Before reading this article, it is recommended to read the previous one: Audio over Bluetooth: most detailed information about profiles, codecs, and devices / по-русски

                      Some wireless headphone users note low sound quality and lack of high frequencies when using the standard Bluetooth SBC codec, which is supported by all headphones and other Bluetooth audio devices. A common recommendation to get better sound quality is to buy devices and headphones with aptX or LDAC codecs support. These codecs require licensing fees, that's why devices with them are more expensive.

                      It turns out that the low quality of SBC is caused by artificial limitations of all current Bluetooth stacks and headphones' configuration, and this limitation can be circumvented on any existing device with software modification only.
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                    • Errors that static code analysis does not find because it is not used

                        Readers of our articles occasionally note that the PVS-Studio static code analyzer detects a large number of errors that are insignificant and don't affect the application. It is really so. For the most part, important bugs have already been fixed due to manual testing, user feedback, and other expensive methods. At the same time, many of these errors could have been found at the code writing stage and corrected with minimal loss of time, reputation and money. This article will provide several examples of real errors, which could have been immediately fixed, if project authors had used static code analysis.

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                      • Things you need to know should you want to switch from PHP to Python

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                        Did you ever think that one day you had got into PHP web programming too quickly?
                        Several years have passed already, you have gained a lot of experience and can’t think of any other ways to work with web but PHP. Perhaps, you sometimes doubt the choice you have made, but are unable to confirm your doubts here and now. At the same time, you need real examples; you want to understand the changes that may occur in particular aspects of your work.

                        Today I will try to answer the following question: "What if we use Python instead of PHP?".

                        I have asked this question myself many times. I have been using PHP for 11 years already and am a certified PHP specialist. I have mastered it so it works just the way I want. I was really puzzled by several articles that criticized PHP severely (PHP: a fractal of bad design). However, when chance came, I switched to Ruby and then to Python. Eventually, I chose the latter. Now I will try to explain how we Python guys live out there.


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