Programming errors are one thing, but there are other types of errors that can be just as damaging to end user experiences. These errors are easy to miss in a software development shop, precisely because of the biases that are present on the typical development team.
Arrays are a basic data structure that are used to store values and associated keys. You’ll see them across most languages though the names of operations might change or how you implement the arrays. They are related to other data structures such as linked lists.