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Whether you're building a verification script for user input, a login form that requests users to include a character in a password - checking whether a string contains a character isn't an uncommon operation. In this tutorial - we'll take a look at the many ways you can check whether...
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In bash scripts, assigning the output of a command to variables can be convinient by storing the outputs of the commands and using them later. In this short guide, we will take a look at how you can store the output of a command as a variable in Bash. The...
The echo command outputs a given string to the standard output pipe, typically pointing to the terminal. Although the standard output pipe can point to other interfaces - the echo command is typically used to print and display messages in the terminal. By default, the text of the displayed messaged...
The Adapter Design Pattern is a popular Structural Design Pattern used in software engineering. This guide looks at how we can implement the Adapter Design Pattern in Python. Design Patterns are template-like solutions - practically recipes for solving recurring, common problems in software development. The Adapter Pattern is based upon...
In this article we'll show you how to force update a component in React.js. More specifically, we'll be giving a brief introduction to React re-renders, we'll show how to force updates in class-based components, and how to force updates in functional components. React Re-Renders React itself automatically handles re-rendering...
Counting the word frequency in a list element in Python is a relatively common task - especially when creating distribution data for histograms. Say we have a list ['b', 'b', 'a'] - we have two occurrences on "b" and one of "a". This guide will show...
Reversing a string isn't uncommon in development, and fairly popular for entry-level interview questions. With JavaScript, we have many ways to reverse a string. We can use a combination of string's split() method as well as array's reverse() and join() methods (since strings are ultimately arrays of characters). We can...
The square root of a number is a very common mathematical function used in all aspects of science - physics, mathematics, computer science, etc. Square roots of numbers and expressions are very frequent in formulas in all matters of science, and especially in the way we represent reality - by...
We commonly need and want to know more about the files and directories that we are working with. Most people know one of the ways, which is simply to Right Click > Properties on the wanted folder or file to view their properties. Though, for the moore terminal-savvy, here's how...
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