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Articles: 82

Joined: Jan 25, 2018

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How to Iterate Over a Dictionary in Python

Dictionaries are one of the most used data structures in all of software development, and for a good reason. They allow us to store our data in neat key, value pairs, which in turn gives us the ability to, on average, access our data in O(1) time. While using...

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Jan 22, 2021·4 min read

Article

How to Format Number as Currency String in Java

Currency is a very important part of our modern world. So, it's equally important for us to be able to properly express it in Java. In this tutorial, we'll go over how to format numbers as currency Strings in Java. Format Number as Currency String Here's how you can easily...

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Jan 20, 2021·4 min read

Article

How to Randomly Select Elements From a List in Python

Selecting a random element or value from a list is a common task - be it for randomized result from a list of recommendations or just a random prompt. In this article, we'll take a look at how to randomly select elements from a list in Python. We'll cover the...

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Jan 12, 2021·3 min read

Article

How to Use Global and Nonlocal Variables in Python

In this article we'll be taking a look at Global and Non-Local Variables in Python and how you to use them to avoid issues when writing code. We'll be starting off with a brief primer on variable scopes before we launch into the how and why of using global and...

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Jan 01, 2021·7 min read

Article

Ultimate Guide to Heatmaps in Seaborn with Python

A heatmap is a data visualization technique that uses color to show how a value of interest changes depending on the values of two other variables. For example, you could use a heatmap to understand how air pollution varies according to the time of day across a set of cities....

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Dec 29, 2020·21 min read

Article

How to Create a Confirmation Dialogue in Vue.js

A confirmation dialogue is a UI pattern where the user will be given a choice to continue with their action or to cancel it. It is commonly used with destructive or irreversible actions, to make sure that the user would indeed want to proceed. In this article,we'll be implementing...

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Dec 23, 2020·6 min read

Article

JavaScript: Check if Object is Array

Working with arrays in JavaScript is a common activity. Sometimes we get a variable in JavaScript that we need to be an array, but we aren't sure that it is. Non-primitive data types in JavaScripts are all objects (functions have their own type, but they too are objects). As a...

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Dec 22, 2020·4 min read

Article

Python: Check if Key Exists in Dictionary

Dictionary (also known as 'map', 'hash' or 'associative array') is a built-in Python container that stores elements as a key-value pair. Just like other containers have numeric indexing, here we use keys as indexes. Keys can be numeric or string values. However, no mutable sequence or object can be used...

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Dec 10, 2020·4 min read

Article

JavaScript: How to Insert Elements into a Specific Index of an Array

An array is a linear data structure and arguably one of the most popular data structures used in Computer Science. Modifying an array is a commonly encountered operation. Here, we will discuss how to add an element in any position of an array in JavaScript. An element can be added...

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Dec 08, 2020·5 min read