Functions
Functions are reusable blocks of code that perform a specific task, taking inputs (parameters) and optionally returning outputs. They are fundamental to programming, enabling modularity, code reuse, and abstraction by encapsulating logic into named units. Functions help organize code, reduce duplication, and improve readability and maintainability across various programming languages.
Developers should learn functions as they are essential for writing efficient, scalable, and clean code in any programming project. Use cases include handling repetitive tasks (e.g., data validation), implementing business logic (e.g., calculations), and building modular applications (e.g., in web development with event handlers). Mastering functions is crucial for debugging, testing, and collaborating in team environments.