These days, Chinese products and services have seeped into nearly every niche. Sure, when someone mentions a Chinese development, you might chuckle and be reminded of those 90’s internet gems like “Glasses, do you need ‘em?”—and honestly, not much has changed. Even DeepSeek ended up being neither truly deep nor entirely seek. Yet, there’s something they’ve perfected, which leaves many SEO optimizers weeping salty tears while trying to bypass the... Read more ›
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AngelList is a social network designed to connect startups with investors and vice versa. The founders of it were dissatisfied with how opaque the VC world was, and built a transparent online funding network to increase the amount of available data. This drastically improves the price-setting process, and allows startups to find the best investors for their business. The project began in partnership with just 50 volunteer investors wishing to... Read more ›
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All Prometheus metrics are based on time series - streams of timestamped values belonging to the same metric. Each time series is uniquely identified by its metric name and optional key-value pairs called labels. The metric name specifies some characteristics of the measured system, such as http_requests_total - the total number of received HTTP requests. In practice, you often will be interested in some subset of the values of a... Read more ›
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What is distributed tracing? Distributed tracing is a method used to profile and monitor applications, especially those built using a microservices architecture. Distributed tracing helps pinpoint where failures occur and what causes poor performance.Let’s have a look at a simple prototype. A user fetches information about a shipment from `logistic` service. logistic service does some computation and fetches the data from a database. logistic service doesn’t know the actual status... Read more ›
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Hi, Habr. Here I have prepared for you a small guide about NTFS Reparse points (hereinafter RP), reparse points. This article is for those who are just starting to into the Windows kernel drivers development. In the beginning, I will explain the theory with examples, then I will give an interesting task to solve.Read more → Read more ›
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This is the third part of a series covering the implementation of algorithms in Go. In this article, we discuss the Merge Interval algorithm. Usually, when you start learning algorithms you have to deal with some problems like finding the least common denominator or finding the next Fibonacci number. While these are indeed important problems, it is not something that we solve every day. What I like about the Merge... Read more ›
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As we enter a new decade, the IT industry has also encountered many loopholes that we must work on. Seeing this, hundreds of motivated young minds have decided to become entrepreneurs. But is it so easy to succeed in a world where competition is already so high? Bluntly, the answer is NO. It is not easy to be successful, and the reason for these startups' failure is the lack of... Read more ›
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This article is about security. I’ll focus on this in the context of web applications, but I’ll also touch on other types of applications. Before I describe approaches and frameworks, I want to tell you a story.BackgroundThroughout my years working in the IT sphere, I’ve had the opportunity to work on projects in a variety of fields. Even though the process of authenticating requirements remained relatively consistent, methods of implementing... Read more ›
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See more at robotics.snowcron.com This is the first article in a serie dedicated to coins classification.Having countless "dogs vs cats" or "find a pedestrian on the street" classifiers all over the Internet, coins classification doesn't look like a difficult task. At first. Unfortunately, it is degree of magnitude harder - a formidable challenge indeed. You can easily tell heads of tails? Great. Can you figure out if the number is... Read more ›
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If you feel like the New Year just came, and you missed the first half of January, then all this time you've been busy looking for tricky bugs in the code you maintain. It also means that our article is what you need. PVS-Studio has checked the ELKI open source project to show you errors that may occur in the code, how cunningly they can hide there, and how you... Read more ›
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Это третья часть рассказа про опционы, где мы поговорим про биномиальную модель, риск-нейтральную меру и разберёмся, как рассчитать цену опциона. Читать далее Read more ›
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дисклеймерэтот документ не является финансовым советом, прост личные мысли по поводу инвестиций, компаний почему я инвестирую в компании, а не крипту/недвиж/крышечки от пива (крипта, недвиж и крышечки у меня, конечно, есть): цель коммерческих компаний — зарабатывать деньги, цель валюты/крышечек — быть средством обмена, а недвиж/etc — заморозить $ где-то вокруг инфляции, ну или как-то так, я инженер, а не экономист, сильно не бейте ¯*(ツ)*/¯ мои принципы инвестирования оч простые: Read... Read more ›
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Возможность изменять фрагменты ДНК всегда была святым Граалем биотехнологии и медицины. CRISPR позволяет делать это с невиданной ранее скоростью и эффективностью. Считайте, что биологи раньше работали на пишущей машинке, а благодаря CRISPR в одночасье пересели на MacBook. Не зря открытие этого метода в 2020 году удостоилось Нобелевской премии по химии.Под катом — рассказ о появлении CRISPR, принципах работы и применении в настоящем и будущем. Да, вы все верно поняли, это... Read more ›
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Перед вами быстрый, удобный и отзывчивый сайт? Возможно, это не результат плодотворной работы множества людей, а всего лишь набор психологических и инженерных трюков, направленных на улучшение Perceived Performance.В большинстве случаев с ростом реальной производительности улучшается и Perceived Performance. А когда реальная производительность не может быть с легкостью увеличена, существует возможность поднять видимую. В своем докладе на Frontend Live 2020 бывший разработчик Avito Frontend Architecture Алек Read more ›
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One of our readers recommended paying heed to the Espressif IoT Development Framework. He found an error in the project code and asked if the PVS-Studio static analyzer could find it. The analyzer can't detect this specific error so far, but it managed to spot many others. Based on this story and the errors found, we decided to write a classic article about checking an open source project. Enjoy exploring... Read more ›
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This is a step by step instruction for creating Node.JS web server application with typescript and express. Creating of new web application on Node.JS is is not making often, so the steps how to do it can be forgotten. So this article is a kind of reminder for me and other developers. Also I added in article links to video clips for more clarification. Here I show how to create... Read more ›
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There’s a lot of talk about machine learning nowadays. A big topic – but, for a lot of people, covered by this terrible layer of mystery. Like black magic – the chosen ones’ art, above the mere mortal for sure. One keeps hearing the words “numpy”, “pandas”, “scikit-learn” - and looking each up produces an equivalent of a three-tome work in documentation.I’d like to shatter some of this mystery today.... Read more ›
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Voice calling plays a crucial role in personal and professional communication. Be it a friendly conversation among classmates or a business deal between companies – voice calling has been the most easy, convenient, and affordable way to communicate for decades. Thus, communication corporations and developers have brought in innovative ways to integrate their Application Programming Interfaces (APIs) and invent newer ways of voice communication. Read More Read more ›
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It may seem that when you are a beginner, you'll do simple things only. No need to learn data structures and algorithms. No need to understand Big O notation, complexity and stuff like that. This couldn't be further away from the truth!In 2008, when I just started learning to program, I spent a lot of time reading books on PHP and MySQL. Months later, when I felt confident, I took... Read more ›
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I'm Ivan Kopenkov, a senior front-end developer at Mail.ru Cloud Solutions. In this article, I will tell you about the approaches we have used for the UI library components customization. You will also learn how to significantly decrease bundle size, cutting off all the unnecessary modules Ant Design takes there.In our case, we are making wrappers for original Ant Design components inside the project, changing their appearance, and developing their... Read more ›
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Neural networks (NN) and computer vision models in particular are known to perform well in specific tasks, but often fail to generalize to tasks they have not been trained on. A model that performs well on a food data may perform poorly on satellite images. A new model from OpenAI named CLIP claims to close this gap by a large margin. The paper Open AI wrote presenting CLIP demonstrates how... Read more ›
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