data structure

Redis Sorted Lists are a powerful data structure that associates a rank with each item in a set. While they are similar to regular sets, they use different commands and provide additional functionality. To start using Redis Sorted Lists, you’ll need to use the ZADD command instead of SADD. When using ZADD, you provide a score along with the value: ZADD names 1 "Flavio" ZADD names 2 "Syd" ZADD names 2 "Roger" As shown in the example, the values in the list must still be unique, but they are now associated with a score....

Dictionaries are a fundamental data structure in Python that allows you to store and manipulate collections of key/value pairs effectively. Unlike lists, which are ordered and indexed by numbers, dictionaries provide a way to map arbitrary keys to their corresponding values. Creating a Dictionary To create a dictionary, you can use curly braces {} and separate each key/value pair with a colon :. Here’s an example with a single key/value pair:...

Python sets are an essential data structure in Python programming. While they share some similarities with tuples and dictionaries, sets have their own unique characteristics. In this blog, we will explore the features and functionality of sets, as well as some practical use cases. Unlike tuples, sets are not ordered and are mutable. This means that the elements in a set can be modified after creation. On the other hand, sets do not have keys like dictionaries do....

Tuples are a fundamental data structure in Python that allow for the creation of immutable groups of objects. Once a tuple is created, its values cannot be modified, added, or removed. Tuples are created using parentheses instead of square brackets, similar to lists: names = ("Roger", "Syd") Just like lists, tuples are ordered, which means you can access their values using index values: names[0] # "Roger" names[1] # "Syd" You can also use the index() method to find the position of a value within a tuple:...

The Set data structure in JavaScript allows you to store and manage a collection of objects or primitive types. It is similar to a Map, where the values are used as keys and the map value is always a boolean true. Table of Contents What is a Set? Initialize a Set Add items to a Set Check if an item is in the set Delete an item from a Set by key Determine the number of items in a Set Delete all items from a Set Iterate the items in a Set Initialize a Set with values Convert to array Convert the Set keys into an array A WeakSet What is a Set?...

A stack is a data structure that comes with certain limitations, contrasting it with arrays. In a stack, we can only add items on top and remove the top item. Think of it like a pile of books, where you can only add books to the top and remove the one on top. This behavior is known as First In, Last Out (FILO). While arrays in JavaScript are already built-in and readily available, we still need to implement stacks ourselves....

In JavaScript, an ArrayBuffer is a data structure that represents a collection of bytes in memory. Similar to a Blob, which represents data available on disk, an ArrayBuffer serves as an opaque representation of bytes available in memory. To create an ArrayBuffer, you need to provide its length in bytes as a parameter in the constructor. Here’s an example: const buffer = new ArrayBuffer(64); Once you have an ArrayBuffer, you can access its length in bytes using the byteLength property, which is read-only....