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What are generics in java? Generics is a term that denotes a set of language features related to the definition and use of generics types and methods. Java generics programming is introduced in J2SE 5 to deal with type-safe objects. It makes the code stable by detecting the bugs at compile time. Java generic methods Continue Reading »
Introduction of Recursion and Dynamic Programming: Recursion is the process in which a function calls itself until the base cases are reached. And during the process, complex situations will be traced recursively and become simpler and simpler. The whole structure of the process is tree-like. Recursion does not store any value until reaching the final Continue Reading »
What is Agile? Agile is an approach or a way to project management and software development (web, android, etc.) that helps the whole team to deliver value to their customers to deliver a quality product in a certain time period. Agile is a way to deliver work in small milestones instead of giving the whole Continue Reading »
What is Express.js? Express.js is a Node.js framework that is the most popular framework. It is a web application framework that provides you with a single API to build websites, web apps, and the back end. Why do we actually need Express.js? How is it useful for us to use Node.js? Node.js is all about Continue Reading »
Annotations are used to provide metadata about class or method in java and can be used while compiling the program. Annotations were introduced in Java 1.5 version. Before that, we had an XML file for configuration. We write annotations with the ‘@’ sign, for example, @Override annotation. Here ‘@’ sign tells the compiler about the Continue Reading »
Core Java Concepts: Serialization Serialization is defined as the process of converting an object into a sequence of bytes that can persist in a database or can be sent through streams. Serialization saves the state of objects for recreation without having to reprocess them on different platforms. Serialization is useful for storing, Transmitting the state Continue Reading »
The Requirement Traceability Matrix (RTM) is a document that identifies and tracks users’ needs through test cases. It captures all client requirements and tracking requirements in a single document, delivered at the end of the Software Development cycle. The main purpose of the Requirement Traceability Matrix is to ensure that all requirements are assessed using Continue Reading »
Debouncing in JavaScript Debouncing is a technique, use of Denouncing we can write better performance code that gets executed repeatedly within a period of time Debouncing ensures that time is taken to task, debouncing prevent unnecessary event on the web Debouncing code ignores unnecessary calls until the call has stopped for a particular time period. Continue Reading »
What is currying? Currying is a technique of evaluating a function with multiple arguments, into a sequence of functions with a single argument. OR In other words, while a function, rather than taking all arguments at one time, takes the primary one and goes back to a new function that takes the second and returns Continue Reading »
The process of placing a list of items in a specified manner is known as Sorting. Some common criteria for sorting are alphabetical and numerical. It can be done in an ascending manner or in descending order. We all know that Collections.sort has the ability in sorting an arrayList for example, alphabetically if they are Continue Reading »
Currying is a task that takes one argument at a time and brings back a new task awaiting the next argument. It is a modification of functions that translate function from callable as f (a, b, c) to f (a)(b)(c). In this article, we will look at what currying is in Javascript, why you should Continue Reading »
Hoisting is a phenomenon in javaScript by which you can access variables and functions even before you have initialized them or you have put some value on them. you can access it without any error. Hoisting allows functions to be safely used in code before they are declared. for Example:
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var x=7; function getName(){ console.log("hoisting in javaScript"); } getName(); console.log(x); expected output: hoisting in javaScript , 7 |
even trying to access Continue Reading »
The Destructuring introduced new features of ES6.JavaScript provides a mechanism to handle the array and properties of objects in a much more innovative way. this mechanism is called destructuring. destructuring means implies a complex structure into the simpler parts. Destructuring allows us to extract multiple properties from an object or an Array. It is a Continue Reading »
What is Software Development Life Cycle (SDLC)? Step by step process of developing an application is known as SDLC. SDLC is a process used by the software industry to design, develop and test high-quality software. Purpose of SDLC It aims to produce quality software that meets customer expectations and reaches completion within time & budget. SDLC Continue Reading »
Software Testing Life Cycle: A process of testing the software to detect the differences between the existing and the expected requirements OR to find out that the existing features match the Expected requirements and to evaluate the features of the software. WHAT IS STLC (Software Testing Life Cycle)? STLC (Software Testing Life Cycle) is a Continue Reading »
Today, we will talk about firebase v9 and how to integrate it into a React.js project. So first of all let’s see what are we doing today- What is firebase? Create a react.js project with firebase. Config firebase v9. Write Operation. Read Operation. Update Operation. Delete Operation. What is firebase ?- Firebase is a Continue Reading »
Well, it has been noticed that all the primitive data types like int, float, double, etc in Java are dealt with differently. Even after the good performance offered by the primitive data types, there are circumstances when we might need an object representation of the primitive data type. Moreover, it has been witnessed that many Continue Reading »
A trigger is a stored program that gets invoked automatically whenever any event such as insertion, update, or deletion occurs in a table. For instance, whenever we add a new row or delete a row, we can define a trigger that gets triggered automatically through which we can be assured of the proper happenings of Continue Reading »
Github is a code hosting platform that lets you and others work on the same project simultaneously. Github is the largest community of Developers where anyone can contribute to the project. By making a separate branch of the code a dedicated area is assigned to the developer so that there won’t be any clash between Continue Reading »
A closure is a combination of a function bundled together (enclosed) with references to its surrounding state (the lexical scope). Lexical scoping The stance of a variable asserted in the source code denotes its scope in syntactic figuring. For example:
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let name = 'John'; function greeting() { let message = 'Hi'; console.log(message + ' '+ name); } |
In this example: The variable name is a global variable. It can be accessed Continue Reading »
Dark Mode was revealed at WWDC 2019 and debuted with iOS 13. It gives iOS a darker look. The appearance of Dark Mode is determined by trait collections. When a user modifies the system’s look, the system requests that all windows and views redraw their contents. Without any additional logic, UIKit controls support it out Continue Reading »
Closures:- One of the greatest features in javascript is closures and it’s widely used but a little bit confusing term of javascript. So let’s understand what is closures. In simple words closures function are gives you access to an outer function from the inner function. We will start the fundamental term lexical scope known as Continue Reading »
What is an interceptor in angular? Interceptors are a unique type of Angular Service that we can implement. Interceptors allow us to intercept incoming or outgoing HTTP requests using the HttpClient. By intercepting the HTTP request, we can modify or change the value of the request. Interceptors are basic building blocks for Angular service so Continue Reading »
Higher-Order Components are what they sound like. A function that takes a component and returns a replacement component is an example of a higher-order component. Higher-Order Components in React may be a pattern that stems from React’s nature, which favors composition over inheritance. Consider the following scenario: In the preceding example, a higher-order component could Continue Reading »
For dealing with adaptive data in Angular, we can choose either Promise or Observable. Both get and post methods of HTTP and HttpClient return Observable and it can be converted into Promise using toPromise() method. So, what’s the distinction when they’re both dealing with adaptive data? What actually is the difference? Promise generates a mono Continue Reading »
Bug reports are a necessary part of any software development process. So it should be the responsibility of QA to make sure that bugs should be written in a totally understating form. How to write a Bug : The bug should be easy to understand as a technical person and non-technical both can understand it. Continue Reading »
CORS stands for Cross-Origin Resource Sharing. It is basically a mechanism that uses HTTP headers to tell the browser whether a specific web app can share resources with another web app or not. Here Both the web apps should have different origins because if they have the same origin then they can share the resources Continue Reading »
Imagine you’re building a UI and you need to connect to an API. When you implement curl calls with the UI, it does not work. You then check the code, and everything seems to be fine. After changing the site or method, it appears that the HTTP call is working. It’s most likely that the Continue Reading »
React hooks came into the picture in October 2018. In early February 2019, they finally came in React v16.8.0.React Hooks are a great addition to React which has completely changed how we write code. Before React hooks, there was no way of using state and lifecycle methods in functional components, and that’s why the functional Continue Reading »
Basic Documentation SonarQube is an automatic code review tool to detect bugs, vulnerabilities, and code smells in your code. It can integrate with your existing workflow to enable continuous code inspection across your project branches and pull requests. Overview In a typical development process: Developers develop and merge code in an IDE (preferably using SonarLint Continue Reading »