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5 Thought-Provoking Use Cases Of Blockchain In Diverse Industries

Reading time 2 min
Views 1.1K

Blockchain is a decentralized technology that maintains a record of all transactions occurring over a peer-to-peer network. Due to Blockchain's several different high-level use cases, numerous industries described Blockchain as the 'magic beans.' 

Blockchains store the record in a decentralized system that is interconnected. This technology lessens vulnerability and enhances transparency in all industrial sectors as information is stored digitally, and it does not have any centralized point to carry out the transactions.

Do You Know?

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Total votes 1: ↑0 and ↓1 -1
Comments 1

Checking the Code of DeepSpeech, or Why You Shouldn't Write in namespace std

Reading time 13 min
Views 519
DeepSpeech is an open-source speech recognition engine developed by Mozilla. It's pretty fast and ranks high, which makes its source code an interesting target for static analysis. In this article, I'll show you some of the bugs found in DeepSpeech's C++ code.

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Introduction


We have already scanned a few projects based on machine learning before, so there was nothing new about DeepSpeech to us in this respect. No wonder since the project is quite popular: as of this writing, it has 15k stars on GitHub.
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Total votes 2: ↑1 and ↓1 0
Comments 0

Part 2: Upsetting Opinions about Static Analyzers

Reading time 4 min
Views 1.1K
Единорог грустит

By writing the article "Upsetting Opinions about Static Analyzers" we were supposed to get it off our chest and peacefully let it all go. However, the article unexpectedly triggered robust feedback. Unfortunately, the discussion went in the wrong direction, and now we will make a second attempt to explain our view of this situation.
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Total votes 7: ↑6 and ↓1 +5
Comments 0

How To Build a Password Management Software Using JAVA?

Reading time 5 min
Views 12K

In this digital world, people prefer to work remotely. There are numerous tasks that each of us goes through every day. If I talk about an application's usage, then it has been predicted that there will be a 25% increase in global app downloads between 2018 and 2022

But it can be quite challenging for organizations to maintain and create multiple passwords. Hence, a password management software can be a great choice to manage this effectively. It is like your bank locker, where one can store numerous passwords. The users only need a master password to access the software.

Do You Know? 

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Rating 0
Comments 10

Distributed File Systems

Reading time 9 min
Views 7.6K

The Big Data Tools plugin seamlessly integrates HDFS into your IDE and provides access to different cloud storage systems (AWS S3, Minio, Linode, Digital Open Space, GS, Azure). But is this the end? Have we implemented everything and now progress has stopped? Of course not.


In this short digest, we'll take a look at 15 popular distributed file systems available on the market and try to get a sense of their individual advantages.


Almost all of these systems are free or open-source, and you can find the sources on GitHub. The sites of these projects, their documentation, and online reviews provide most of the information we’ll consider here. Other than HDFS, none of these technologies have been implemented yet in Big Data Tools. But who knows? Perhaps someday we'll see them in our plugin.


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Total votes 8: ↑8 and ↓0 +8
Comments 1

7 Best Practices Every Budding React.JS Developer Must Follow to Excel

Reading time 4 min
Views 5.9K
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With the advancement in web technology, the entire globe is sliding towards the online tech sphere. The globe around us is going tech-centric day by day and thus the demand for front-end designers and developers also.

Whatever, be the purpose, people just google things and get their desired result. This is all because of the increase in the evolution of web and mobile app development. While we all know that to be a Web developer, you need to have basic skills of HTML, CSS, and JavaScript, but, with time React.js emerged into the technology stack of the web development field and outdated JavaScript.

A Report by JS reflects that 64.8% of the web developers prefer to use the React.JS framework and would love to use it again and again in the future. It has even beaten other categories of frameworks that are Vue.js with 28.8% votes and Angular with 23.9% votes. This is the reason why the demand for React.JS development companies is at an all-time high.

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With React, it becomes painless to build an interactive user interface. It efficiently updates and renders the right components when changes are made.

Before you use React.js as web technology, let’s have a look at the practices that every React.js developer should follow to write better react codes for their application.
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Total votes 1: ↑1 and ↓0 +1
Comments 3

Organizing Content on Our Blog with Tags

Reading time 3 min
Views 458

As you know, we regularly post new content on programming and various interesting events from our company's life on our blog. The range of topics is expanding, and the number of articles is growing, so at some point, we started to attach tags to our posts so that you could quickly find content on topics you're interested in. Just click the appropriate tag and – presto! – a sorted list of related articles appears.

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Upsetting Opinions about Static Analyzers

Reading time 2 min
Views 1.3K
Static analysis tools have advanced far over the time they've been around. They no longer resemble the "linters" that were in active use 20 years ago. But some programmers still view them as extremely primitive tools. And that's very sad. It hurts to see the static analysis methodology in general and our PVS-Studio analyzer in particular treated that way.

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Total votes 3: ↑3 and ↓0 +3
Comments 0

Fatal Fight: How we've got 5 million organic installs?

Reading time 8 min
Views 1.5K
Fatal Fight Android game

The story of Fatal Fight started in 2015. The time when going global and having 5 million downloads on Google Play Store seemed to be a dream of every game developer.

In this article, I will talk about the way we converted the dream into our actual reality. To make it super understandable, find a guide below where I will cover all the stages of development of Fatal Fight and even more.


Research


The idea of Fatal Fight hasn't just come from nowhere. Before understanding what game to develop, we needed to research what are the current gaps in the mobile games market. And, to come to this point, we took several steps.

First, we analyzed what are the most searchable mobile games in the Google Play Store. It turned out, the top 3 mobile games that users were looking for were the following:

  • Puzzle Games
  • Car Games
  • Fighting Games

Here we narrowed down our research. We were playing most downloaded games from each category to figure out if those games meet users’ needs while trying to answer what kind of challenges they have with those games.

As a result, Puzzle and Car Games had a wide range of mobile games with pretty nice UI/UX design and other characteristics. However, during the testing of the fighting games, the picture was quite different.

We were surprised by the fact that we could not find any proper games with satisfactory features. And I believe, not only we but also the dozens of users who were craving for favorable experience while playing a fighting game.

While asking ourselves the question “Why?” we found out that the main reason was the gameplay. The interaction between users and the games was complex. It was not comfortable to manage punching, kicking, jumping and other possible moves separately or even all at once on a smartphone.
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Total votes 3: ↑3 and ↓0 +3
Comments 2

Brainless Platform for a Robotic Vacuum Cleaner

Reading time 11 min
Views 1.2K
More on robotics.snowcron.com

First of all, this is just an exercise, useful as is, but the result is going to be far from an industrial level robots. Why doing it then?

For the same reasons we do all exercise: to get an experience. After all, when we write a character recognition «MNIST classifier» neural network, we know that the problem is solved long time ago. But we need to become familiar with tools and approaches. Same here.

Now, why is it called «brainless»?
Total votes 8: ↑8 and ↓0 +8
Comments 0

PopMech and its ancestors: a foray into the history of tech

Reading time 4 min
Views 1.3K

Many of us grew up reading a classic, that was a staple of many home libraries. However, it doesn’t seem to be as prominent as it once was. To understand the ongoing shift in tech coverage, we need to explore its roots.

Continue Reading
Total votes 5: ↑5 and ↓0 +5
Comments 0

Database using ScriptableObjects with save/load system

Reading time 5 min
Views 12K
Translation

Introduction


Each game has data that game-designers work with. In RPG there is a database of items, in match-3 — the cost in the crystals of tools from the store, in action — hit points, for which medical kit heals.


There are many ways to store such data — someone stores it in tables, in XML or JSON files that edit with their own tools. Unity provides its own way — Scriptable Objects (SO), which I like because you don't have to write your own editor to visualize them, it's easy to make links to the game's assets and to each other, and with Addressables this data can be easily and conveniently stored off-game and updated separately.


In this article I would like to talk about my SODatabase library, with which you can conveniently create, edit and use in the game (edit and serialize) scriptable objects.

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Total votes 4: ↑4 and ↓0 +4
Comments 0

Big Data Tools Update 11 Is Out

Reading time 3 min
Views 1.5K

EAP 11 of the Big Data Tools plugin for IntelliJ IDEA Ultimate, PyCharm, and DataGrip is available starting today. You can install it from the JetBrains Plugin Repository or inside your IDE.


Big Data Tools is a new JetBrains plugin that allows you to connect to Hadoop and Spark clusters and monitor nodes, applications, and jobs. It also brings support for editing and running Zeppelin notebooks inside IntelliJ IDEA and DataGrip, so you can create, edit, and run Zeppelin notebooks without ever having to leave your favorite IDE. The plugin offers smart navigation, code completion, inspections, quick-fixes, and refactoring inside notebooks.


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Total votes 7: ↑7 and ↓0 +7
Comments 0

Agreements as Code: how to refactor IaC and save your sanity?

Reading time 9 min
Views 1.1K


Before we start, I'd like to get on the same page with you. So, could you please answer? How much time will it take to:


  • Create a new environment for testing?
  • Update java & OS in the docker image?
  • Grant access to servers?

There is the spoiler from the TechLeadConf. Unfortunately, it's in Russian


It will take longer than you expect. I will explain why.

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Total votes 3: ↑3 and ↓0 +3
Comments 0

Compensation for Error Caused by Limited Gain-Bandwidth of Operational Amplifiers in Low-pass Filters

Reading time 6 min
Views 3.5K
Tutorial
Amateur vs Pro

An operational amplifier has the internal compensation circuit for stability which limits its working bandwidth. Frequency response of the compensated Op Amp has slope of −6 dB/octave or −20 dB/decade. Unity gain frequency defines the bandwidth where the Op Amp is able to amplify a signal. If we multiply the gain and frequency at any point, the result is the same, allowing us to use this parameter to select the appropriate Op Amp. It is called Gain-Bandwidth Product, GBW or GBP. The limited open-loop gain introduces a closed-loop gain and phase error.

But we want to optimize our circuits, right?
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Total votes 8: ↑8 and ↓0 +8
Comments 0

How Is Flutter Helping Businesses In Getting Feature-Packed App At Affordable Prices

Reading time 5 min
Views 1.1K
Tutorial
image

With 2.7 million apps available in Google Play Store and 1.84 Million apps in Apple’s app store, it is clear that mobile app development has become an urgent need of the hour for businesses of all domains.

Did you know!



According to developer stats, it is predicted that there will be 7 billion million users by 2021 all across the globe.

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Total votes 4: ↑3 and ↓1 +2
Comments 0

ZTools for Apache Zeppelin

Reading time 8 min
Views 1.2K



Zeppelin is a web-based notebook for data engineers that enables data-driven, interactive data analytics with Spark, Scala, and more.


The project recently reached version 0.9.0-preview2 and is being actively developed, but there are still many things to be implemented.


One such thing is an API for getting comprehensive information about what's going on inside the notebook. There is already an API that completely solves the problems of high-level notebook management, but it doesn’t help if you want to do anything more complex.

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Total votes 3: ↑3 and ↓0 +3
Comments 0

Mysql 8.x Group Replication (Master-Slave) with Docker Compose

Reading time 5 min
Views 4.8K

This post is handling the following situation - how to setup up simple Mysql services with group replication being dockerized. In our case, we’ll take the latest Mysql (version 8.x.x)

FYI: all mentioned code (worked and tested manually) located here.

I will skip not interested steps like ‘what is Mysql, Docker and why we choose them, etc’. We want to set up possibly trouble proof DB. That’s our plan.

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Rating 0
Comments 1