computer science

Habr

Habr is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Habr rather than just read about it. In short: Habr (since 2018; formerly Habrahabr) (Russian: Хабр, Хабрахабр) is a Russian collaborative blog about IT, computer science and anything related to the Internet, owned by TechMedia. Habrahabr was founded in June 2006, and the English section of Habr was launched in 2019.

Key takeaways

Habr belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Habr to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Habr from memory before moving on to harder problems.

Reference excerpt

Habr (since 2018; formerly Habrahabr) (Russian: Хабр, Хабрахабр) is a Russian collaborative blog about IT, computer science and anything related to the Internet, owned by TechMedia. Habrahabr was founded in June 2006, and the English section of Habr was launched in 2019. Habr is often compared to other technology sites, such as Engadget or Hacker News. The parent company of the site, Habr Blockchain Publishing, developed a group of websites ("Habr Q&A" qna.habr.com, "Habr Career" career.habr.com, "Habr Freelance" freelance.habr.com after they developed habrahabr.ru). In 2007, Habrahabr received two nominations in the ROTOR contest (Russian: РОТОР), which awards prizes to Russian-language web projects. It was nominated for Discovery of the Year (Russian: Открытие года) and Online Community of the Year (Russian: Интернет-сообщество года) prizes. The website's author, Denis Kryuchkov, was nominated for the Producer of the Year prize (Russian: Продюсер года). In 2009, the website was again nominated for the Online Community of the Year prize.

Sections

Blogs The blogs comprise three sections: theme-specific, personal and corporate blogs. Each team blog consists of two sections, both of which contain entries that go by the moniker "habratopiki" (in Russian, "хабратопики") in the Habr environment. The first section, titled "zahabrennye" (in Russian, "захабренные"), broadcasts entries that have received high approval from users of the website. The second section, called "othabrennye" (in Russian, "отхабренные"), contains habratopiki that have received disapproval by users of the Habr platform. Topic-specific blogs, which go by the name "Haby" (the plural form of the Russian adaptation of the word "hub"), include sections devoted to programming, IT security, DIY projects, self-care, popular science, open source software, vintage hardware, game development, transportation, programming language-specific threads, and others. Habr's corporate blogs are authored by companies that include Google, Yandex, Intel, Microsoft, Samsung, and ABBYY, among others.

Questions and Answers (Q & A) Since the autumn of 2010, Habr has hosted a questions and answers service, similar to Google's services FAQ. In this section, any user can ask questions about IT-related topics and receive answers from other members of the project. In 2013, the Q&A section separated from the main portal Habrahbr, and can now be found under a section that is separated from the main Habr portal.

People The "people" section provides statistics on registered users (distribution by country and region, the number of registered and active users) and includes user rating, built on the basis of their habrasily. In the present karmagraf - a graph showing the cumulative change indicators karma users.

Corporate Rating companies, one way or another connected with the sphere of high technologies. Basis rating - the assessment by users of a particular company.

Job board The section devoted to industry job boards. All resumes and vacancies divided by sector ("consulting, outsourcing," "Optimizing sites (SEO)», «Media", etc.). Only users with non-negative karma can post. Summaries from users with negative karma will not appear in the list.

Sandbox The Sandbox is designed for posts from read-only users. Posts get there from users who have not yet received access to commenting and creating posts without pre-moderation. After hitting the post in the sandbox it is to see someone from "zahabrennyh," and if he is interested in the post, it will be added to the main section.

Mechanisms Karma - The karma is a value assigned to each user. It can only be changed by other users. It is a form of community-driven moderation, since a user's karma level determines their privileges. To publish posts, for example, users must have a positive karma value. Rating - The rating is another value assigned to each user. Rating depends on Karma, positive and negative votes of other users for posts and comments. However, the exact algorithm has not been disclosed by the website. Voting for topics and comments - This allows users to show their opinion about posts.

References

Worked examples

Example 1 — a first encounter with Habr

Start with the simplest possible case. Write down what Habr claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Habr before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Habr ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Habr

In research: Habr appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Habr in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Habr is common in secondary-school and first-year university syllabi. It links to neighbouring topics Community websites, Computing websites, Internet properties established in 2006, so understanding it makes those chapters shorter.
In everyday life: Look for Habr outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Habr in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Habr means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Habr out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Habr in simple terms?

Why does Habr matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Habr?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Habr.