In Python, there are 3 ways to pad a numeric string with zeros to the left. Using zfill Method The str.zfill(width) method returns a copy of the string left filled with ASCII '0' digits to make a string of length width. For example, #!/usr/bin/...

Rust String Formatting and Printing Best Practices.Using println! Prints to the standard output, with a newline. Use the format! syntax to write data to the standard output. See std::fmt for more information. fn main() { let name = "Bob"; pri...

3 ways to initialize a Python Array .Initialize a list with values If you want to initialize a list of any number of elements where all elements are filled with any values, you can use the * operator as follows. #!/usr/bin/env python3 arr = ['H'] *...

Filling a slice with a repeated pattern.Using for Loop Using a for loop is the simplest solution. Fill the slice with the value 8 by looping through each element and setting the value. package main import "fmt" func main() { slice := make([]int...

Fetch Internet Resources Using The urllib Package.Fetching URLs The simplest way to use urllib.request is as follows: #!/usr/bin/env python3 # Import datetime module import urllib.request with urllib.request.urlopen('https://google.com') as respon...

How do you check if a string contains a substring?.Using String.prototype.includes The includes() method performs a case-sensitive search to determine whether one string may be found within another string, returning true or false as appropriate. 'Go...

command line tool and library for transferring data with URLs. cURL (pronounced 'curl') is a computer software project providing a library (libcurl) and command-line tool (curl) for transferring data using various network protocols. The name ...

List Files and Directories.The ls command lists files and directories within the file system, and shows detailed information about them. It is a part of the GNU core utilities package which is installed on all Linux distributions. List all files, in...

Go mod provides access to operations on modules. Initialize new module in current directory. If you plan to publish your module for others to use, the module path must be a location from which Go tools can download your module. go mod init ...

Runs unit tests in a project. Takes the name of the project, as specified in the projects section of the angular.json workspace configuration file. When a project name is not supplied, it will execute for all projects. Set up testing ng...

Compiles an Angular app into an output directory named dist/ at the given output path.The command can be used to build a project of type "application" or "library". When used to build a library, a different builder is invoked, and only the ts-config,...

Development tools and libraries specialized for Angular.How to use the Angular CLI command line The Angular CLI is a command-line interface tool that you use to initialize, develop, scaffold, and maintain Angular applications directly from a command...

Promise based HTTP client for the browser and node.js--pname-- is a client HTTP API based on the XMLHttpRequest interface provided by browsers. --pname-- depends on a native ES6 Promise implementation to be supported. If your environment doesn't sup...