What is Lambda Expression?

A lambda expression (also referred to as an anonymous function) is a concise way to create a function without a formal name. It's often used for short, single-purpose functions, particularly as arguments to higher-order functions (functions that take other functions as arguments). Lambda expressions are useful for simplifying code and improving readability, especially in functional programming paradigms. Common uses include event handling, data transformations (e.g., in map, filter, reduce operations), and defining simple callbacks.