An array is a type of data structure you can use to store some data you want to use in your program. Arrays are a collection of individual values separated by a comma each with its own index/location. This collection could be anything: numbers, objects, more arrays, etc.
Arrays are the most fundamental data structure in any programming language.
Arrays are available in most (if not all) programming languages, built-in into the language.
Let’s talk about what arrays represent in most lower level programming languages, like C: they represent a set of contiguous cells in the computer memory.
Starting from a cell in the memory (it helps to visualize cells like in a spreadsheet if you want), we can create an array with 10 slots by getting 10 contiguous slots.
This allows us to perform operations like accessing the slot #2 by knowing the memory address of the first slot, #0, and simply adding
2 to that.
Arrays in lower level languages can only store one specific data type, so we can make calculation on how much memory an array will take beforehand, so we can store it safely in a place in the computer memory that can host it.
An array is initialized using this syntax:
const myArray = 
const myArray = new Array()
there’s no difference, but I prefer the shorthand syntax
const myArray = new Array(10)
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