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Saturday, April 30, 2022
Friday, April 29, 2022
How the TypeScript Pick Type works
The TypeScript Pick type is a utility type that is used to create a new custom Type, based on an already existing one. It is the opposite of the Omit Type. Let's look at how it works.
Custom Types
We are using custom types in this guide. If you're new to custom types, check out my guide on custom types here.
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What Is HttpSession in Servlets?
In the video below, we take a closer look at HttpSession in Servlets and HttpSession Attribute example. Let's get started!
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Thursday, April 28, 2022
4 Types of JDBC Drivers [video]
In the video below, we take a closer look at JDBC-ODBC Bridge, Native-API, Network Protocol, and Thin Drivers. Let's get started!
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Wednesday, April 27, 2022
Proximity Marketing – An IoT Based Approach for Improved Results
Introduction
IoT has penetrated many domains and areas and has been successful. It has revolutionized the industry altogether, and this article will reveal the capabilities of IoT for Proximity Marketing. The reader would be able to connect and understand the problem statement and realize the importance of this innovation.
The Problem Statement
With the advent of technologies and smartphones, brick-and-mortar store owners have increasingly seen consumers migrate away from brick-and-mortar retail stores in favor of convenient digital outlets over the last few years. With the ease of smartphones and “one-click” shopping, many shoppers feel that browsing for products in a physical store is almost obsolete. On researching to go over the issue, it is found that BLE Beacons are a great way to guide customers their way through a large store and find the intended product. Also, for owners, it helps in targeted product recommendations. The proposed solution consists of Proximity sensing and a Product recommender system.
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Tuesday, April 26, 2022
6 Helpful Hacks to Accelerate Your Mobile App Development Timeline
There are some clear priorities when it comes to developing any digital product.
The development speed and how quickly you can get it to your customers will always be the most important. When developing a mobile app, speed is critical. That will mean using the correct methodology, the best tech, the most suitable platform, and a robust development strategy.
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How To Rename Files in Linux and macOS Terminal
Renaming files is something that occurs frequently, and in Linux on the terminal, there are many ways to rename files. Let's look at some of the main ways you can rename your files on Linux and other Unix-based systems like MacOS.
Renaming Files With the MV Command
The mv command moves a file to another place. It can also be used to move a file to the same location, and simply change its name. For example, if you wanted to rename a file called file-1.txt to file-2.txt, you would first cd into that directory, and run the following:
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Monday, April 25, 2022
6 Ways to Beautify Your GitHub Repository
Whether you like it or not, GitHub has become the primary provider to host one's code. You or your company is probably using GitHub. I want to highlight some files to beautify your GitHub repository in this post.
Read Mes
I hope that by now, everybody is familiar with READMES. If one places a README file at the root of one's repo, GitHub will display its content on the repo's homepage.
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How the TypeScript Readonly Type Works
TypeScript has a number of utility types, which are types specifically created by TypeScript to solve a problem. In this article, let's look at the Readonly type.
TypeScript Readonly Type
As the name suggests, the Readonly type in TypeScript suggests that a particular type is read-only.
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The Complete React Developer Salary Guide for 2022
Data from a Statista study shows that React JS is the most in-demand web framework in 2022, with 40.41% of software developers globally indicating they use it to develop web applications. This does not come as a surprise, since the demand for React developers has been growing steadily in recent years. Speed, scalability, and SEO-friendliness are the few reasons some big companies such as Uber and Netflix run on this library. If you are looking to develop this skill or you are a working professional already, being up-to-date about the React developer salary rates in the U.S. can come in handy when negotiating compensation with employers.
What Is a React Developer?
A React developer is a software engineering professional that designs and implements consumer-facing features for websites and applications using either React JS or React Native frameworks.
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Citrix: Understanding Architecture and How User Gets Citrix VDI
As we all are used to working from home, we know how our organization restricts their employee to work in a secure manner irrespective of where are they. Citrix plays a major role to make life easy for organizations and keep its show running in any situation. Citrix is a popular tool that provides VDI (Virtual Desktop Infrastructure) to work from anywhere. They are experts in application and desktop virtualization, dedicated and shared VDI offering, and accessing through a thick and thin client. You can install workload on-premise, and Azure/GCP cloud.
Today we are going to discuss the major components in Citrix architecture and the role of individual components. Additionally, we will learn about User VDI access flow.
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Sunday, April 24, 2022
Saturday, April 23, 2022
Friday, April 22, 2022
Where Does GraphQL Fit In the Stack?
GraphQL is a popular language, and it’s getting more popular by the day. We hear front-end developers, mobile developers, and back-end developers talking about GraphQL. So it’s clear that developers use GraphQL across the stack. But where exactly does GraphQL fit in the stack, and what benefits do you gain by using it?
In this article, we’ll first do a quick recap of what “the stack” looks like without GraphQL, and then we’ll dive into how adding GraphQL changes it and what that means for building applications.
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Speeding Up Large Collections Processing in Java
According to The Britannica Dictionary, the term collection designates
a group of interesting or beautiful objects brought together in order to show or study them.
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Thursday, April 21, 2022
How the MV Command Works on Linux
The mv command, short for the move, lets us move files and directories between two locations on Linux and other Unix-like systems (i.e. MacOS).
The syntax for mv can be found below, where [OPTIONS] are optional settings you can use, SOURCE is the single or multiple files/directories you want to move, and LOCATION is the location the file or directory should be moved to:
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How To Move From Manual to Automation Testing
With software requirements changing at lightning speed in an agile environment, more and more organizations look to inculcate more atomic development cycles for accelerating their Time To Market (TTM). A 2021 study by digital.ai has discovered that 86% of software development teams have adopted agile, up from 37%, a year ago. This shift to more agile software development methods has led to a simultaneous demand for more efficient means of software testing during the software is developed. Companies run the risk of suboptimal software delivery due to costly manual test case maintenance cycles as well as the lack of visibility these legacy processes bring to the table.
A Statista study highlights that 32% of all Software projects fail due to the simple lack of time to test the product thoroughly.
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Wednesday, April 20, 2022
Building an AutoML Application
Machine learning (ML) has been developed and growing fast. It also depends on an expert in ML to develop the ML model, i.e. pre-processing, building model, feature engineering, tuning of hyper-parameters, etc. Data scientists have many demanding responsibilities, and challenges. These challenges include the selection of the best algorithm, modification of this algorithm over many iterations, and identification and tuning of the hyper-parameters many times. Despite going through difficult processes, it is worth noting to watch the ML model beat expected accuracy. There is the myth that the developers love to overdo the coding. Many steps that are performed by data scientists are repeatable and time-consuming which makes these steps ideal candidates for automation [1].
Figure 1
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Tuesday, April 19, 2022
When To Use Apache Camel vs. Apache Kafka?
Should I use Apache Camel or Apache Kafka for my next integration project? The question is very valid and comes up regularly. This blog post explores both open-source frameworks and explains the difference between application integration and event streaming. The comparison discusses when to use Kafka or Camel when to combine them, and when not to use them at all. A decision tree shows how you can quickly qualify one for the other.
The History of Application Integration and Event Streaming
My personal history and experience in application integration and event streaming are the following. It shows my background and how I see the integration and data streaming markets.
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How To Save HTML Canvas as an Image
Canvas gives us a lot of flexibility to create great, code generated graphics, and sometimes we need to download them as images. Fortunately, this is quite easy with HTML canvas. Here is an example, where clicking the button downloads the canvas as an image:
Let's look at how this works.
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Keys to a Great API Security Solution
So, do you think your APIs are secure?
You might want to take another look at your security.
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Monday, April 18, 2022
Sunday, April 17, 2022
Laravel Validation and Custom Rules
Hi, I’m Valerio Barbera, software engineer, founder, and CTO at Inspector.
Data validation is one of the fundamental features of any application and it is something developers manipulate almost every day. The value a software provides to users is often a function of the quality of data it is able to manage. Laravel ships with a lot of predefined validation rules you can immediately use in your controllers.
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AWS Serverless Lambda Resiliency: Part 1
In this series of articles, we address the patterns for the resilience of cloud-native serverless systems.
This article covers an introduction to cloud-native and serverless resiliency and different scenario approach patterns, and part 2 will cover further scenario patterns.
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The Most Popular Technologies for Java Microservices Right Now
My name is Viacheslav Aksenov, I am a backend developer and in recent years I have been writing web applications in Java/Kotlin. Throughout my practice, I have met with various systems both in production and in pet projects. Some systems had their own "bicycles," but most were based on very similar technical solutions.
The main idea of this article is to describe the main technical challenges facing modern web applications. And also list those frameworks and libraries that are most often used to solve these problems. We'll grab some infrastructure as a bonus.
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Leverage Docker to Produce Classic Deployment Artifacts
Traditionally, deployment artifacts were types of archives that were transferred to the target environment and installed there. They could be simple .zip archives with binaries, Java's .jar or .war files, or simply .exe executables, among others. It is worth saying that this approach implied preliminary preparation, like installing and configuring all software dependencies.
The situation changed when Docker appeared. Moreover, the principle changed: now we operate Docker images like some self-sufficient sealed units containing everything the app needs to work. But we have to admit that both principle and technology are relatively new to the industry. Many companies still rely on a VM-based approach and classic deployment artifacts. And it's quite clear why they do this: infrastructure is already bought; Ops teams are trained on how to deploy, manage and monitor applications; and so forth. In two words, this journey seems to be very long and tough. To mitigate this, we can use the well-known step-by-step method with gradual adjustments to the existing delivery pipeline.
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Saturday, April 16, 2022
Differences Between Laravel and Yii
Ask any seasoned web app developer about their choice of programming language, and they are sure to mention PHP. PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. As per Builtwith, 3,090,319 live websites are still using PHP. However, when it comes to developing massive projects without lag or stability issues, developers tend to use frameworks, and PHP has two remarkable frameworks: 1) Laravel and 2) Yii. Both frameworks have a lot of followers in terms of full-grown communities globally, and there may be questions arising about which to choose.
What Are Laravel and Yii?
Laravel is a simple PHP framework frequently used for web-based or web application development initially created as a better alternative to Codeigniter. It is known for MVC Support, articulated ORM systems, reliability, modularity, and uncomplicated coding rules. Some of the key features of Laravel Framework are:
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Friday, April 15, 2022
How the TypeScript Exclude Type Works
In TypeScript, the Exclude utility type lets us exclude certain members from an already defined union type. That means we can take an existing type, and remove items from it for specific situations.
Let's look at how the exclude utility type works in TypeScript.
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Thursday, April 14, 2022
Demystifying How 'this' Works in JavaScript
It's something used in JavaScript, but it is often a mystery. In JavaScript, this works quite differently from other programming languages - and it works differently depending on if you are using strict mode or not.
If you find it hard, you aren't alone. Let's look at exactly how this works and remove any confusion about its meaning in various contexts.
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NoSQL Migration Essentials
Need help with your NoSQL migration? Look no further than our "NoSQL Migration Essentials" Refcard. We walk through the primary steps for moving out of a relational database, plus important design principles to understand and consider in your migration process.
Readers will review key concepts that range from denormalizing and modeling data to defining access patterns, designing primary keys and indexes, and creating an entity relationship diagram — all demonstrated with a simple site application example. As a bonus, readers can use the included JSON structure at the end to interact with a NoSQL playground.
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Readers will review key concepts that range from denormalizing and modeling data to defining access patterns, designing primary keys and indexes, and creating an entity relationship diagram — all demonstrated with a simple site application example. As a bonus, readers can use the included JSON structure at the end to interact with a NoSQL playground.
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Top Automation Practices to Avoid During Testing
Introduction
The quality of software solutions delivered to consumers determines the success of every software development company. The hard work of the QA team, which frequently tests and updates the software product to keep it up to date, is one of the most significant factors in ensuring the product’s quality. Automation testing best practices and appropriate test automation technologies can help a company achieve this, but what if your tests fail despite your best efforts? Automation testers make mistakes in their eagerness to do their best, which costs them time and money. It also raises questions about their competency and trustworthiness. It may sound like a nightmare for the company but breathe a relief because you can prevent these blunders.
Automation Testing Practices That Testers Need to Take a Break From
When executing various types of automation testing in the automation testing life cycle. Many novice testers and developers make automation testing blunders. It’s more vital to avoid some of the automation testing practices than it is to get the testing right. Many automation testing tools, automation frameworks, and some AI-based automation tools in the market claim to be a one-stop-shop for all automation testing issues. You can resolve the problem to some extent, but half of it remains, leaving behind the costly impact of the consequences.
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Wednesday, April 13, 2022
How to Manage Your JDKs With SDKMAN
In this blog, you will learn how to manage several Java Development Kits (JDKs) on your Linux system using SDKMAN. Besides JDKs, several other SDKs can be managed by means of SDKMAN. Enjoy!
1. Introduction
Some time ago, a colleague of mine showed me how he used SDKMAN and how easy he could maintain different versions of JDKs, Maven, etc. on his Linux system. I had heard of SDKMAN before but did not yet take the time to take a closer look at it. But now I did :-).
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Best Practices for Apache Ranger-Based Authorization for Your Data Platform
Introduction
Alluxio enables data orchestration for compute in any cloud. It unifies data silos on-premise and across cloud environments to provide the data locality, accessibility, and elasticity needed to reduce the complexities associated with orchestrating data for today’s big data and AI/ML workloads.
Alluxio is designed to help any framework access any data, from any storage at high performance regardless of the environment, which enables an organization to remain agile and competitive in adopting and experimenting with new and existing technologies.
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Verification and Validation in Testing
Introduction
You are at the right place! This is not a free vocabulary-building class but a critical evaluation of a much sought-after debate around verification and validation in the software testing world. Why do we need to know the difference between Verification and Validation? Even though they sound just about the same, they carry different meanings depending on what you intend to do as a tester/developer in the software development and testing process. They both go hand in hand while solving a problem. However, there is a lot of confusion around the meaning of these two words concerning software testing. While there may be many definitions of these terms in various fields on the internet, here we will look at these terms in the testing space and analyze both of these terms in detail.
Verification vs Validation
Software testing is a vast field. It involves various methods and processes proposed to solve different software testing issues. Verification and Validation are also a part of the same group in software testing. It is also known as a V-Model (Verification and Validation model) in the context of software development and testing.
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Tuesday, April 12, 2022
Top Python Coding Best Practices for Beginners
In March 2022, Python made headlines in the programming world by becoming the most popular programming language. After years of hovering in the top ranks, it finally surpassed Java and C to reach the number one spot on the TIOBE index.
And why not? After all, it is such a fun and powerful language to work with. It is fast, user-friendly, open-source, and has a community comprising millions of programmers across the globe.
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Understanding Cross Browser Testing and Responsive Testing
Introduction
The Internet is inevitable in the current time. It is everywhere, and the entire world depends on it to function, perform day-to-day activities and stay connected with people from different corners. Gone are the days when testers only chose to create websites for selected browsers and hardly faced issues maintaining a website on a few browsers. As the technology matured, many significant players entered the browser market. Even the users evolved, became tech-savvy, and improved their browsing habits. Now was a time when businesses were in critical need of cross-browser testing and responsive testing to stay ahead of the competition. Cross-browser testing focuses on the website's overall functionality; responsive web testing verifies the look and feel of the web application. Cross-browser testing deals with the analysis of the web browsers that their users use, and responsive testing deals with the devices where the company's user base visits the websites. Let us shed some light and understand cross-browser and responsive testing in detail.
What Is Cross Browser Testing?
We all know that testing cross-browser compatibility of websites "is of utmost importance. It helps understand how stable your web application is across various technologies, browsers, operating systems, and devices. The adoption of cross-browser testing is to provide a better user experience irrespective of which browser-OS-device combination your users use to access your website. In cross-browser testing, the testers generally validate the web application's functionality and ensure its user-friendliness and performance are up to the mark across the web browsers. Businesses can also take the help of cloud-based automated cross-browser testing tools to have access to a wide range of real devices to test their web and mobile applications. Different browser engines render websites differently; even the version of each browser causes the code uniquely. It means the code behind the websites is read differently by every browser. So, various cross-browser testing strategies are critical for website accessibility. It is how different browsers render a web page:
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Monday, April 11, 2022
Sunday, April 10, 2022
Saturday, April 9, 2022
Who Are We Helping?
It’s hard to deny the truth that for a lot of us “difficult” means “good,” and “more difficult” is “even better.” From video games to exercise to music to cooking, if someone accomplishes something perceived as hard to do, it’s a clear indication of their skill. Conversely, saying something is easy or simple is often a veiled insult, an insinuation that anyone could do it and therefore the thing is therefore barely worth acknowledging.
And, while I don’t want to discount the system upon which so much of our leisure activities are based, I think this is a lesson we in IT have taken too much to heart. I’m writing today to ask us to all consider shifting our thinking in the direction of “easy can also be good.” In fact, things which are easy are often better overall than things that require a greater level of individual virtuosity.
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Using PDFs With the Jamstack: Adding Search With Text Extraction
A few weeks ago, I shared a couple of blog posts describing how to add PDFs to your Jamstack site. The first talked about using the Adobe PDF Embed API to give you more control over viewing PDFs on an Eleventy site. The second example took it a bit further by using Adobe's PDF Services API to generate thumbnails of the PDFs when the Eleventy site was developed. Since I wrote those posts, we released a new service, the PDF Extraction API.
This API extracts information from your PDF, including:
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Friday, April 8, 2022
2020 and Top Codeless Testing Tools You'd Better Know
This article was originally published in May 2020.
Coding may take years to practice to master. Having testers program a bunch of codes, fix errors in applications, and finish backlogs in weeks are challenging, time-consuming, and cost rising. The World Quality Report 2019–2020 has pointed out that lacking advanced programming expertise is one of the top challenges when applying test automation to Agile projects. We could say, the development of codeless automation testing tools is an emerging solution to the challenge.
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Solving the Problem of Working Remotely With Resource-Intensive Applications Using Moonlight
For a number of reasons, you cannot transfer high-throughput equipment and resource-intensive software home, but you can still organize high-quality remote access from anywhere at no extra cost. We are going to tell you about the first way we have tested for maintaining convenient remote management from almost any device.
What’s Up, Doc?
The average employee just needs to connect to the remote desktop using the RDP protocol in order to access corporate resources from a laptop, and herein lies the problem for IT specialists: ensuring security. If a specialist needs resource-intensive applications that use 3D acceleration, this is a problem of a completely different kind.
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8 Types of Functional Testing
Functional and non-functional testing are the two types of software testing. There are various types of functional testing, that are as below:
- Unit Testing
- Integration Testing
- System Testing
- Regression Testing
- Smoke Testing
- Sanity Testing
- Acceptance Testing
- User Acceptance Testing
Brief Description of Functional Testing Types
Unit Testing
Unit testing ensures that every piece of code written in a segment produces the best results. Developers just look at the interface and the determination for a part during unit testing. It provides documentation of code progression because each unit of code is thoroughly tested before moving on to the next.
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GitOps Best Practices for DevOps Teams
GitOps is a relatively new approach to managing production environments with the help of automation, containerization, and orchestration technologies. The idea behind GitOps is to have all the necessary infrastructure components up and running before pushing code to production. With such an automated deployment technique, every change is deployed in a predictable manner. However, not everyone has experience with this new approach – or even understands how it works. To assist you, we have compiled six actionable GitOps best practices you can use to get started in this new direction for better outcomes and more productive collaboration.
The Importance of GitOps
GitOps is a new way of managing and deploying software. It’s not just about Git, but the entire workflow. GitOps is a set of practices that help you deploy software that is more reliable, repeatable, and efficient. GitOps is relatively new, and it can be tough to understand how it works and how it could help your team. It basically involves Git to store all your manifest files and Kubernetes to deploy the application. Companies must look beyond DevOps to deploy their applications in a highly predictable manner. Instead of reinventing the wheel, GitOps is basically using simple tools like Git to manage your deployments.
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Thursday, April 7, 2022
Taking a Proactive Approach to Cybersecurity With Laurie Williams [Podcast]
The SolarWinds hack in December of 2020 is considered one of the largest and most sophisticated attacks known to date. The attack, which potentially put 18,000 public and private organizations at risk, was used as a springboard to compromise a raft of U.S. government agencies. SolarWinds later claimed that less than 100 were actually hacked as a result.
According to experts, this hack could be the catalyst for broad changes in the cybersecurity industry, prompting companies and governments to devise new methods on how to protect themselves and react better to breaches and attacks.
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Logging Best Practices – MDC, Ingestion, and Scale
I don't care about religious wars over "which logger is the best". They all have their issues. Having said that, the worst logger is probably the one built "in-house"... So yes, they suck, but re-inventing the wheel is probably far worse.
Let's discuss making these loggers suck less with proper usage guidelines that range from the obvious to subtle. Hopefully, you can use this post as the basis of your company's standard for logging best practices.
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Wednesday, April 6, 2022
6 Best Platforms to learn Blockchain in Depth
Hello Devs, if you want to become a Blockchain Developer and are looking for the best resources to learn Blockchains like online platforms, websites, places, books, online courses, and tutorials, you have come to the right place.
Earlier, I have shared the best Blockchain courses, and today, I will share the best places, websites, and online platforms where you can learn Blockchain in-depth by yourself.
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Tuesday, April 5, 2022
Handling Null: Optional and Nullable Types
Java has long been infamous for its NullPointerException. The reason for the NPE is calling a method or accessing an attribute of an object that has not been initialized.
Java
var value = foo.getBar().getBaz().toLowerCase();Running this snippet may result in something like the following:
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How to Choose the Best Encryption Methods for Databases
Introduction
Encryption is the process of encoding messages or information so that only authorized parties can see it. Encryption has been going on for centuries. For example, in World War II Allied forces were sending out encrypted codes using the unwritten Navajo language, which was impossible for the Japanese to decode.
Today encryption is even more important because we live in an era where privacy and security are constantly under attack from hackers who want access into our personal lives. Thanks to modern technology like AES encryption, there's no reason why hackers should read sensitive information.
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Monday, April 4, 2022
Organizing and Improving Development Teams: The Testing Matrix
Introduction
The testing matrix is a framework for improvement. It can help plan our testing before we start developing. During development, it can help as a single source of truth for what has been done daily. When development and testing are finished, it may be the big picture of our testing choices and decisions. Did we make the right decisions? Sometimes the answer to this question can only come in the future. But in the future, we must make sure that we can recall our decisions in some detail, otherwise, no lessons will be learned. In retrospect, it may be beneficial if the big picture for our testing activities can be found by looking at a single matrix.
The Matrix
On the vertical axis, we can display the levels that we've tested or that we plan to test. Did we do performance testing at a unit level? What about integration testing and regression tests?
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Sunday, April 3, 2022
Saturday, April 2, 2022
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