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16.09.2024 − 22.09.2024
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dev_family @ Habr 1 place · 09/20/2024 05:27 EDT

React Native Splash Screen — support for different themes

Hi all! The dev.family team is in touch. In this article, we are sharing a short guide on how to install Splash Screen in a cross-platform app written in React Native with support for multiple themes.Splash screen is the first screen that users see before loading into the main application. This screen is perhaps the best way to make the name of your app, and in general, its entire name,... Read more

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Mixxxxa @ Habr 1 place · 07/30/2021 05:03 EDT

Checking BitTorrent in honor of the 20th anniversary. Time == quality

Couple of weeks ago (or to be more precise, on July 2, 2021), the legendary BitTorrent protocol turned twenty years old. Created by Bram Cohen, the protocol has been developing rapidly since its inception, and has quickly become one of the most popular ways to exchange files. So why not check out a couple of long-lived related projects with the PVS-Studio analyzer for Linux? Read more → Read more

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Habr
dlinyj @ Habr 2 place · 07/29/2021 12:00 EDT

Building an Arduino based RFID Emulator

This project is aimed at creating an experimental device for emulating RFID labels of three widely available components. I simplified the explanation of the process so that it could be easily replicated. I also developed some helpful ideas along the way, including writing a special program for converting a serial number into the transmitted data, which will definitely prove useful. Read more → Read more

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Habr
fpn @ Habr 1 place · 07/28/2021 01:05 EDT

Screensharing from FFmpeg to WebRTC

In the comment sections of our articles about our server there are often users who say: "Why would you jump through so many hoops, when you can do the same with a single line of code in FFmpeg!?" Read More Read more

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Habr
turSystem @ Habr 2 place · 07/27/2021 03:07 EDT

You don't know Redis (Part 2)

In the first part of You don't know Redis, I built an app using Redis as a primary database. For most people, it might sound unusual simply because the key-value data structure seems suboptimal for handling complex data models.In practice, the choice of a database often depends on the application’s data-access patterns as well as the current and possible future requirements.Redis was a perfect database for a Q&A board. I... Read more

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Habr
EmbeNewsMaker @ Habr 3 place · 07/27/2021 01:47 EDT

The way we made an external PCIe RAM disk based on the DDR memory

RAM disk, this is a disk based on RAM memory chips. This kind of disk is not able to retain data after the power is turned off (unless a supporting battery is used), but has an exceptionally high read/write speed (especially for random access) and an unlimited lifespan. It is important in tasks that need a lot of cycles to write over information, even professional SSD drives don’t live long.... Read more

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Habr
dmitryphysics @ Habr 1 place · 07/25/2021 08:37 EDT

RS485 — a standard for industrial networks. What are the main features of the transceiver microcircuit?

When building a network for communication between a large number of devices, one may think: what interface to choose? Each interface has its own pros and cons that determine its application: CAN — Automotive, RS485 / RS232 — Industrial, Ethernet — Consumer Electronics / Server. What features of the transceiver microcircuit help to protect against many problems during installation and operation? How is the process of measuring and researching of... Read more

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Habr
lany @ Habr 1 place · 07/24/2021 06:27 EDT

[Translation] How to make debug-friendly method references

Java 8 introduced two kinds of functional expressions: lambda expressions like s -> System.out.println(s) and method references like System.out::println. At first, developers were more enthusiastic about method references: they are often more compact, you don't need to think up the parameter name, and, as urban legends say, method references are somewhat more optimal than lambda expressions. Over time, however, the enthusiasm waned. One of the problems with method references is... Read more

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Habr
reablaz @ Habr 1 place · 07/22/2021 17:29 EDT

[Translation] MyBee — FreeBSD OS and hypervisor bhyve as private cloud

This article is aimed to describe FreeBSD OS as a platform to launch cloud guest OSes with simple API capabilities, using MyBee and DevOPS I really like! Read more Read more

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Habr
Andrey2008 @ Habr 2 place · 07/22/2021 02:42 EDT

A Beautiful Error in the Implementation of the String Concatenation Function

We, the PVS-Studio static code analyzer developers, have a peculiar view on beauty. On the beauty of bugs. We like to find grace in errors, examine them, try to guess how they appeared. Today we have an interesting case when the concepts of length and size got mixed up in the code. Read more → Read more

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Habr
man_of_letters @ Habr 3 place · 07/22/2021 02:03 EDT

Mode on: Comparing the two best colorization AI's

This article continues a series of notes about colorization. During today's experiment, we’ll be comparing a recent neural network with the good old Deoldify to gauge the rate at which the future is approaching. This is a practical project, so we won’t pay extra attention to the underlying philosophy of the Transformer architecture. Besides, any attempt to explain the principles of its operation to a wide public in hand waving... Read more

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Habr
foto_shooter @ Habr 3 place · 07/21/2021 10:17 EDT

Enums in C#: Hidden Pitfalls

C# has low barriers to entry and forgives a lot. Seriously, you may not understand how things work under the hood but still write code and remain easy-going about this. Though you still have to deal with different nuances over time. Today, we'll look at one of such subtle aspects — handling enumerations. Read more → Read more

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Habr
turSystem @ Habr · 07/21/2021 06:04 EDT

How to create LinkedIn-like reactions with Serverless Redis

As a side hustle, I teach tech recruiters web and software development technologies using plain English. It helps them with understanding job specs and resumes and it makes all of us, tech people, happier.I run a weekly newsletter and often get feedback from recruiters via email or LinkedIn DMs.I thought that I could try to collect feedback using the “Reactions” feature just like LinkedIn or Facebook does. It’s not as... Read more

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Habr
fpn @ Habr 3 place · 07/21/2021 00:39 EDT

Practical uses of WebRTC Canvas streaming

In this article we will once again return to the tired topic of webinars and webinar hosting tools. And no, we're not about to code a whole new system for webinar hosting – there are already plenty of those. Instead, we will talk about connecting drawing software to the webinar, so that you could manually draw and broadcast the process. Read More Read more

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Habr
numbrCodeHbr @ Habr 1 place · 07/17/2021 16:43 EDT

Speed Dating with the CodeIgniter 4 on GitHub

Getting acquainted with the CodeIgniter 4 PHP framework is quite simple.Spend the evening following the instructions in the «Build Your First Application» section. Since the documentation is written in a good, technically understandable language, it is even possible to get some aesthetic pleasure in the process of familiarizing yourself with this and other sections.The feeling of airiness and consistency of the CodeIgniter 4 project will be present with you everywhere... Read more

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Habr
hgdeoro @ Habr 1 place · 07/15/2021 09:08 EDT

Sending data from Arduino Nano 33 IoT to Raspberry Pi 4 using UDP

Goal: continuously send UDP packets from an Arduino Nano 33 IoT to a Raspberry Pi 4 to understand the reliability of this solution. Read more Read more

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Habr
mamamatison @ Habr 2 place · 07/15/2021 06:29 EDT

Guide to naming in code

We present a guide to name entities in code based on putting naming in perspectives of semantic space, design, and readability. The main idea is that naming should not be considered as creation of tags, but as a fundamental part of design process, which implies integral and consistent vocabulary to be used. We discuss naming process and naming formalism from these perspectives and we provide guidelines for practical use.The work... Read more

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Habr
temujin @ Habr 1 place · 07/13/2021 05:02 EDT

В начале июня состоялся релиз дистрибутива для цифровой криминалистики и тестирования систем безопасности Kali Linux 2021.2. Эта операционная система является клоном Debian, используя репозиторий Testing с наиболее свежими пакетами. Новые iso образы становятся доступными для загрузки каждые три месяца, предыдущим релизом был 2021.1, а следующим будет 2021.3. Собственные наработки, созданные в рамках проекта, выложены на Гитлабе. Узнать подробности Read more

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Habr
fpn @ Habr 2 place · 07/13/2021 00:55 EDT

WebRTC in Docker. Struggling for resources

A few weeks ago we wrote an article about Docker and WebRTC servers and talked about the intricacies of launching containers. Our readers (rightly) questioned whether Docker was a suitable tool for production, for the following reasons: Read more Read more

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Habr
nookino @ Habr 3 place · 07/12/2021 08:43 EDT

An Unexpected Article About Our Unicorn: Who Is the PVS-Studio Mascot?

PVS-Studio has a mascot that became inseparable from the brand - a unicorn. Lately we've been getting many questions about our magic steed: why the unicorn, why has he changed so much, does he have hooves, how come he doesn't wear pants, and how do we draw him. The answers are finally here, in this very article.Attention: there will be a lot of pictures. And I mean A LOT. Read... Read more

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Habr
elena_zz @ Habr 1 place · 07/08/2021 10:11 EDT

The benefits of offering VoIP to your customers under your own brand

The potential of VoIP to your customers is simply phenomenal. Businesses are experiencing the advantages of VoIP’s cost-efficiency and reliability and now you can pass these benefits onto your own customers very easily. Cloud telecommunication is sophisticated and easily integrated. Confidence in this technology is growing fast. There has never been a better time to start talking to your customers about adopting this solution. It will deliver huge business benefits... Read more

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