We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Is an Array Object?

By Jessica Susan Reuter
Updated May 17, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

An array object is a piece of data held in a specific place within a block of contiguous memory. These memory blocks are called arrays, and they are used to group similar objects together for easy organization and access within a computer program. The location of an object in an array is called an index; in most computer languages, the index of the first object starts at 0, rather than 1. An object does not need to be present at every index in an array. For example, an array could have space for five objects, but only have objects placed at indexes 0, 2, and 3.

All objects in an array must be of the same type, so if an array is declared to contain strings, every array object must be a string. An array object can be any size and contain any type of data, as long as the general object type is the one declared by the array. A string array could contain one string 50 characters long, and the next index could be 50,000 characters long; only their types matter. Array objects can be simple types, like a number or string, or any type of complex object.

In certain circumstances, an array object can be an entirely new array. When an array contains an object that is itself an array, the containing array is called a multidimensional array. There are two types of array objects in multidimensional arrays: the array objects that are themselves arrays, and the objects those secondary arrays hold. All the previous type rules apply to multidimensional arrays, so if one array object is also an array, all the other objects must be arrays as well. This nesting of arrays can be done as many times as needed, making two-dimensional grids, three-dimensional cubes, or higher-level clusters of data.

Arrays, and the type of array object allowed inside them, differ somewhat among programming languages. Some languages allow complete control over arrays and their objects, allowing a programmer to create them at will. Others hide the arrays and objects inside wrappers that allow a programmer to manipulate them indirectly. Still other languages have special constructs that force an array to see all objects as the same type, partially invalidating its rule on type specificity without breaking the underlying data. No matter how arrays are implemented, the array objects themselves are never affected except to be grouped, and the ability to group array objects is an important tool in data organization.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.