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Habrahabr / Interesting / topical publications

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Good day, Habr. Two years and a few months ago, I wrote here his first and only post, like, having no experience of game development, I have created my first android app. Let and spent the whole your then vacation. Although the game it was hard to call, hehe. the heat You took this post and it gave me a good push in the right direction. During these two years I tried and learned a lot: working with 3D models, familiar with C++, painted textures, recorded sounds, writing lyrics and diz docks, but most importantly I found a suitable development environment, namely, the divine Unreal Engine 4. I was hesitant to write anything until then, until you can do something that will please at least me. And I think I succeeded. Pretty nice to see that big and thorny...

My name is Kevin and I would like to tell you about a simple way escaped from rekruterov spam. I'm a frontend developer with a good job, standing at the head of the team of seven people. But recruiters bombarded me with letters to such a degree that sometimes I just don't want to come in the mail. I already know in advance that they will be there, with all these "Hope you're doing well" and "do you have the desire to chat?". No, not the slightest. I want to be left alone to do tasks and to do work that I already have. Read more →

Sad when the free subscription ends, and the money will automatically begin to debit. And well, if the product liked it, but it also happens that during the test period, the user understands that the offer doesn't suit him. Forgetfulness or because of the employment of the subscription is not cancelled and money is being spent in vain. In some cases, canceling a subscription turns into a complicated quest, the passage of which brings no pleasure. Mastercard decided to help their card holders. The company announced a ban on the automatic deduction of money after a free trial period. Read more →

A Couple of years ago, I test your veteran laptop ThinkPad X220, and then came to the conclusion that the progress in portable computers — he's kind of slow. At the time the 2011 model from the model 2016 is not very different. Possibly as of 2016 it was, but the situation with portable computers tend to change dramatically when a new technology finally becomes quality. Let's see how it goes, for example, the thinnest and the lightest laptop with a built-in optical drive: Lenovo ThinkPad X301. X301 is a 2008 model in August last year, she was 10 years old. At the time of the announcement it was one of the most expensive laptops in principle: in exchange for money, you offered an incredibly thin model that can compete with the presented shortly before that...

What path sees an unprepared team lead when the need arises to learn something of their colleagues, whether the team or the people that accompany, support, or sell its product? That's right — blind presentation slides 100500, book peregovory or meeting room, to throw an invitation in the mail, and expect that everyone remotely interested they will come and will make every effort to understand the issue. It is easy to guess that the chance of success of such an event is 0.00%. But why, and how really you need to approach the transfer of knowledge within the company to achieve a result, knows Eugene Goleva (cheaffa). And we TeamLead Conf said, and now will share with you decades of experience training adults. Read more →

In this post, I will describe the algorithm for the procedural generation of levels, a two-dimensional dungeon with a pre-specified structure. The first part will present a General description and a second implementation of the algorithm. Introduction the Algorithm was written as part of work to receive a bachelor's degree and is based on the article Ma et al (2014). The goal was the acceleration of the algorithm and the addition of new functions. I'm quite happy with the result because we made the algorithm fast enough to use it during game execution. After completing undergraduate work, we decided to turn it into an article and send it to the conference Game-ON 2018. the Algorithm To create the game level, the algorithm receives as input a set of...

One of the editions of this mechanics There is a deck of 100 cards with natural numbers from 1 to 100, each one by one. You and second player to take 3 cards from this deck. Task — one by one lay them on the table in ascending order. But it is impossible to change information with each other and show map until it will not be put on the table. That is not to say, pounding the table, wink and so on — anything. If at the end of the game 6 cards are laid out correctly, both players win. At the moment when the first card goes wrong, both players lose. Your task — to win in this game. With you playing a person you never seen before. He may not even speak the language. But he's definitely an Earthling. And he likely has already tried to play this game with other...

Renowned security expert Troy hunt has supported the website Have I Been Pwned (HIBP) with millions of records stolen accounts. Everyone can check your email for leakage. Troy hunt monitors hacker forums, buying databases that put up for sale, sometimes these databases send him for free. But he had never seen, in order to auction such a huge database, as the current Collection No. 1 (Collection #1). huge archive contains 818 2 692 238 records with e-mail addresses and passwords. Read more →

The Guardian — one of the largest British Newspapers, it was founded in 1821. For nearly 200 years of existence, the archive has accumulated a fair amount. Fortunately, not all of it is stored on the site in the last couple of decades. In the database, which the British themselves called the "source of truth" for all online content, about 2.3 million items. And at one point, they realized the need of migrating from Mongo to Postgres SQL once on a hot July day in 2015, the failover procedure was subjected to a severe test. The migration took nearly 3 years!.. We have translated an article, which tells how was the process of migration and the difficulties faced by administrators. The process is long, but the summary is simple: getting big task, accept that...

The Federal Antimonopoly service of Russia has published the analytical report, which called the monopoly position of Microsoft in the Russian market of operating systems, write "Vedomosti". According to the FAS for 2015, on desktops and laptops the situation is as follows: Windows 95,6% macOS — 2,5% Linux — 1,9% it is Possible to note a significant increase in the coverage of Linux. There was a time when a free OS struggled to overcome the barrier of 1% on desktops. However, to the performance of the Windows so far away. Read more →

"We need an exponential improvement in human behavior or in an exponential improvement of technology, and the world doesn't look like he's acting on the first principle." To the General Director of the company a half-billion of Demis Hassabis working day starts very casually. No cocktail of cabbage in 5 o'clock in the morning reading The Wall Street Journal, no intense exercise, followed by Breakfast. Instead, he at the appropriate time arrives to his office near kings Cross in London, spends the day in meetings and then coming home to a family lunch with his wife and two children at 19:30. There he can relax and put the kids to bed at 10 PM, starting what he calls the "second working day". And then everything becomes a little less ordinary. "I don't sleep...

Less than a year ago saw the light of publication, where we are told about the educational and laboratory complex (ELC) ES1 electric trains "Swallow", developed by our University. Then I promised that it will not be the last post on this topic, in particular threatened to tell about the problems of creating three-dimensional visualization for this kind of simulations and to outline the main approaches to their solution. Last year graced us with another release — ULK EVS2 high-speed train "Sapsan", which took place in August last year. By itself, educational-laboratory complex of the EMU deserves a separate story, but in the context of this publication we will focus on their everyday concerns — the problem of creating an adequate subsystem of...

Professor, Osaka University Yoshiki Sawa describes your plans for the treatment of heart failure in 2017 Pluripotent stem cells – iPSC – possess limitless potential in the world of regenerative medicine. One of the many possibilities of their application can be recovery of patients with hearts that soon will be first tested in clinical trials on humans in Japan. From the moment of their receipt in the laboratory Signa Yamanaka of Japan in 2006, the potential of iPSC has been studied many times. We have seen how their implanted rabbits to restore vision, used in the treatment of brain tumors and transformed cells predecessor. Read more →

Massachusetts Institute of Technology. Lectures #6.858. "Security of computer systems." Nikolai Zeldovich, James Mickens. 2014 Computer Systems Security this course is about designing and implementing secure computer systems. Lectures cover the threat model, attacks that threaten the safety and security practices based on the latest scientific works. Topics include operating system security (OS), capabilities, information management, language security, network protocols, hardware protection and security in web applications. Lecture 1: "Introduction: threat model" Part 1 / Part 2 / Part 3 Lecture 2: "Monitoring hacker attacks" Part 1 / Part 2 / Part 3 Lecture 3: "buffer Overflows: exploits and defense" Part 1 / Part 2 / Part 3 Lecture 4: "privilege...

Recently one of my friend had an unpleasant incident. His son was doing school homework in computer science, but the result of his labors was gone. Child used as storage media USB-stick, which was a company logo of my friend, and it is in this drive was the problem. If this case were isolated, it could skip past, but among the specialists in data recovery such drives ("branded"; they are called "gift") – has long been hackneyed problem. As your branded USB drive have done my friend? Ordered online meets the parameters of the device with more or less meets brand design (this is important), and ordered the printing firm drawing on the General description for that order of the stick the desired figure. It seems to be easy, but ... the desire to save money has...