Inline Functions
Inline functions are a programming optimization technique where the compiler replaces a function call with the actual code of the function at compile time, eliminating the overhead of a function call. This is commonly used in languages like C++ and C to improve performance for small, frequently called functions by reducing stack operations and branching. The trade-off is increased binary size due to code duplication, so it's best applied judiciously.
Developers should use inline functions when optimizing performance-critical code, especially for small functions called repeatedly in loops or hot paths, as it reduces function call overhead and can lead to faster execution. It's particularly useful in systems programming, game development, or embedded systems where low-level control and efficiency are paramount. However, it should be avoided for large functions to prevent code bloat and maintain readability.