Calculating the average of an array in JavaScript is a common task that can be accomplished using a variety of methods. In this article, we will explore three different ways to calculate the average of an array in JavaScript, with code examples for each method. Method 1: Using a for loop The most basic way […]
pandas dataframe rename column with code examples
Pandas DataFrame is a powerful and versatile tool for working with data in Python. One of the most common tasks when working with DataFrames is renaming columns. In this article, we will go over different methods to rename columns in a DataFrame using code examples. The first method to rename columns in a DataFrame is […]
how to install xgboost package in python with code examples
Installing XGBoost Package in Python XGBoost is an open-source software library that provides a gradient boosting framework for C++, Java, Python, R, and Julia. It is designed to be highly efficient and scalable and is used by many companies and researchers in both academia and industry. In this article, we will cover the steps to […]
mysqli_real_connect hy000 1045 access denied for user phpmyadminlocalhost using password yes with code examples
The mysqli_real_connect() function is a part of the MySQL Improved Extension (MySQLi) library in PHP. This function is used to establish a connection to a MySQL server. However, if the function returns the error "HY000: 1045: Access denied for user 'phpmyadmin'@'localhost' (using password: YES)", it means that the provided user credentials (username and password) do […]
download a file using curl with code examples
CURL is a command-line tool that is used for transferring files over the internet. It supports various protocols such as HTTP, HTTPS, FTP, and many more. It can be used to download files from a server or upload files to a server. In this article, we will discuss how to use CURL to download a […]
pandas merge multiple dataframes with code examples
Pandas is a popular Python library for data manipulation and analysis. One of its key features is the ability to merge multiple DataFrames into a single DataFrame. This can be useful for combining data from different sources or for cleaning and preprocessing data prior to analysis. The most common way to merge DataFrames in pandas […]
us phone number regex with code examples
Introduction: A regular expression, or regex, is a sequence of characters that defines a search pattern. It is often used to validate and extract specific information from a string of text. In the case of phone numbers, regex can be used to check if a phone number is written in a specific format and to […]
dummy api json with code examples
An API, or application programming interface, allows different software systems to communicate with each other. One common way for these systems to communicate is through the use of JSON, or JavaScript Object Notation, which is a lightweight format for storing and transporting data. In this article, we will go over the basics of creating a […]
calculate average javascript with code examples
JavaScript is a powerful programming language that can be used to perform a wide range of tasks, including calculating averages. In this article, we will explore several ways to calculate the average of a set of numbers using JavaScript, along with code examples to illustrate each method. Method 1: Using a for Loop One of […]
npm set default registry with code examples
NPM, or Node Package Manager, is a package manager for the JavaScript programming language. It is the default package manager for the JavaScript runtime environment Node.js. One of the features of NPM is the ability to set a default registry, which can be useful for managing packages in a specific environment. Setting a default registry […]