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Groups of data in different forms are one of the fundamental data structures in most programming languages. In many cases, groups of data expressed through different data types are referred to as Collections. In this guide - we'll take a look at Collections in JavaScript and when to use which...
Lazar Ristic
In this guide, we'll walk you through the differences between two of Python's most popular data structures - Dictionaries and Arrays. Each of these provide a specific way of arranging your data, with pros and cons for certain tasks and knowing when to use which will allow you to leverage...
In this tutorial, we'll be taking a look at how to convert a JSON String into a Java Map using Jackson, an extremely popular data-binding library for Java. Specifically, we'll be working with this JSON object: { "Task 1" : "In_Progress", "Task 2" : "Done&...
David Landup
Borůvka's Algorithm is a greedy algorithm published by Otakar Borůvka, a Czech mathematician best known for his work in graph theory. Its most famous application helps us find the minimum spanning tree in a graph. A thing worth noting about this algorithm is that it's the oldest minimum spanning tree...
Mila Lukic
Variables act as a container to store data. A developer can use type hints when creating variables or passing arguments, however, that's an optional feature in Python, and many codebases, old and new, are yet to have them. It's more common for a variable in Python to have no information...
Naazneen Jatu
In this article, we'll take a look at how to remove keys from Python dictionaries. This can be done with the pop() function, the del keyword, and with dict comprehensions. Remove a Key Using pop(key,d) The pop(key, d) function removes a key from a dictionary and returns...
Sathiya Sarathi Gunasekaran
A dictionary in Python is a collection of items that store data as key-value pairs. We can access and manipulate dictionary items based on their key. Dictionaries are mutable and allow us to add new items to them. The quickest way to add a single item to a dictionary is...
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...
Guest Contributor
It's not uncommon to have two dictionaries in Python which you'd like to combine. When merging dictionaries, we have to consider what will happen when the two dictionaries have the same keys. But first, we have to define what should happen when we merge. In this article, we will take...
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