Function Scope
Function scope is a fundamental concept in programming that defines the visibility and lifetime of variables declared within a function. It means that variables defined inside a function are only accessible within that function and are typically destroyed when the function execution completes. This concept is crucial for managing data encapsulation, preventing naming conflicts, and controlling memory usage in code.
Developers should understand function scope to write clean, maintainable, and bug-free code, as it helps avoid variable collisions and unintended side-effects. It is essential when working with languages like JavaScript, Python, or C, where scope rules dictate how variables are accessed and modified, particularly in scenarios involving closures, recursion, or modular programming.