IEnumerable

IEnumerable is a way in programming to represent a collection of items that can be accessed one at a time, such as a list or a set. It provides a standard method to go through each item sequentially, enabling developers to write code that can handle different types of collections uniformly. Think of it like a conveyor belt: you can pick items off one by one in order, without needing to know how the collection is stored. This abstraction makes it easier to work with various data sources flexibly and efficiently.