Hashing Interview Questions and Answers

C++, Java / November 23, 2022 / sumitsuthar94 / 0

Hashing is an important programming concept that is used in many areas including data storage and encryption. A good knowledge of hashing algorithms and data structures is crucial for any programmer looking to tackle larger projects. This article will provide an overview of the most commonly asked hashing interview questions and answers. Following are famous

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How to Open File in Node.js?

Node.js / November 17, 2022 / TopCode / 0

Introduction Opening a file is a common programming technique. Every web application does a file open operation. Whenever a file read or file write operation executes eventually it does a file open call as well. Without file open operation, reading and writing to a file are not possible. To open file in Node.js, We can

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Advantages of Java:

Java / November 16, 2022 / TopCode / 0

Introduction: Java is a popular and versatile programming language that has been around since 1995. It is an object-oriented language with syntax similar to C and C++ which makes it easy to learn. There are a number of key advantages to using Java over other programming languages, such as: Advantages: A large library of open-source

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Sequelize ORM in Nodejs

Node.js / November 15, 2022 / TopCode / 0

Introduction: If you’re a Nodejs developer and you want to use an Object Relational Mapping (ORM) tool to connect your Nodejs applications to a database, then look no further than the Sequelize library. Sequelize is an ORM for Nodejs applications that provides access to MySQL, Postgres, and SQLite databases. It makes it easy to interact

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How to fix: Express.js request body is undefined.

Node.js / November 8, 2022 / TopCode / 0

Introduction If you are using the latest express version in Node.js then you may face the above exception while accessing HTTP request body. In the earlier versions of express, there was no such type of issue in the library. In the update of July2020, express.bodyParser() is no longer bundled as part of express. Therefore User need

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How to rename file in Node.js? fs.rename() Node.js

Node.js / October 29, 2022 / TopCode / 0

Introduction In this blog post, we will learn how to rename a file in Node.js using fs module. fs mdoule provides various synchronous and asynchronous APIs to rename files. Let’s get start. fs.rename() The fs.rename() is used to asynchronously rename a file at the given old path to provided new path. In the case that a new

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SQL Injection Attack

Java, Node.js / October 11, 2022 / TopCode / 0

Introduction: An SQL injection attack is a type of code injection attack wherein attackers can execute malicious SQL code to manipulate databases or disclose sensitive information. SQL injection attacks can be used to steal data, modify data, or even delete data. SQL Injection Attack: To demonstrate an example of a SQL injection attack, consider the

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DNS module in Node.js

Node.js / October 8, 2022 / TopCode / 0

Introduction: DNS module is a core module of Node.js that provides developers with an interface to the Domain Name System (DNS). It allows you to do things like get and set DNS records, as well as resolve hostnames and IP addresses.  The DNS module is important because it helps you communicate with name servers around

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HTTP Rest Client in Node.js: Everything You Need to Know

Node.js / October 5, 2022 / TopCode / 0

In a world where everything is interconnected, the network has become one of the most important pieces of infrastructure in our lives. And within that network, APIs have become one of the most valuable resources we have.  APIs are how businesses expose their internal data and functionality to the outside world, so any developer who

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