Undoing the last commit in Git allows you to correct mistakes, remove unwanted changes, or reorganize your commit history before sharing with the team. As the creator of CoreUI, a widely used open-source UI library, I’ve used git reset countless times across development workflows to fix commit mistakes and maintain clean project history. From my expertise, the most effective approach is using git reset with appropriate flags to control whether changes are preserved or discarded. This method provides flexible commit undoing with control over working directory and staging area states.

Emptying arrays is essential for resetting application state, clearing user selections, or preparing arrays for new data without breaking existing references in JavaScript applications. With over 25 years of experience in software development and as the creator of CoreUI, I’ve implemented array clearing in numerous components like shopping carts, form builders, and data tables where arrays need to be reset while maintaining their reference integrity. From my extensive expertise, the most efficient and reference-preserving solution is setting the array’s length property to 0. This approach clears all elements while keeping the same array object, ensuring all variables pointing to it remain valid.