Expert Contributors Articles

Peter Grant

Updated on September 23, 2025

In Python, a datetime object (part of the datetime module) represents a specific date and time, combining both components into a single object for easy manipulation and formatting.

Vytenis Alaburda

Updated on September 22, 2025

React is a JavaScript library for building interactive user interfaces, while Next.js is a React framework that adds features like server-side rendering, routing and static site generation for optimized web development.

Somen Dawn

Updated on September 22, 2025

Telecom leaders expect fluency in next-gen tech. Here are five essential skills you need to land a role, drive transformation, and accelerate your career.

Antonello Zanini

Updated on September 22, 2025

ERR_OSSL_EVP_UNSUPPORTED is an OpenSSL error indicating that the requested operation or algorithm is not supported by the current version or configuration of OpenSSL. Here's how to get rid of the ERR_OSSL_EVP_UNSUPPORTED error in Node.js.

Suraj Gurav

Updated on September 22, 2025

A confusion matrix is a table used to evaluate the performance of a classification model by comparing the predicted labels with the actual labels, showing true positives, true negatives, false positives and false negatives.

Satyam Tripathi

Updated on September 22, 2025

KeyError in Python is an exception that occurs when you try to access a key that does not exist in a dictionary.

Katlyn Gallo

Updated on September 22, 2025

Discretionary access control (DAC) is a security model where the owner of a resource grants users permission to access that resource.

Sohail Hosseini

Updated on September 22, 2025

A t-test is a statistical test used to determine if there is a significant difference between a sample mean and a hypothesized population mean, or between the means of two independent groups. Here's how to perform a t-test in Python.

Matt Martin

Updated on September 19, 2025

The most efficient workers of the future will be the ones who orchestrate a network of specialized AI agents with a control layer to oversee them.

Anthony Corbo

Updated on September 18, 2025

Cryptography is the study of secure communication and protecting information by converting it into an unreadable format, ensuring confidentiality, integrity, authenticity and non-repudiation in digital systems.