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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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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....
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...
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...
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...
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...
Java's object-oriented code structure can make referencing variables in multiple places more difficult. It can also be difficult at times to decide which class a given variable should be a part of, especially if it's a widely used value like a database connector or mathematical constant. In many languages, when...
In this article, we'll take a look at how to convert Bytes to a String in Python. By the end of this article you will have a clear idea of what these types are and how to effectively handle data using them. Depending on the version of Python you're using,...
Lists are one of the four most commonly used data structures provided by Python. Its functionality, extensibility, and ease of use make it useful for implementing various types of functionalities. Python lists have a few interesting characteristics: Mutability - meaning it can change, which means it allows us to easily...
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