The onUnmounted lifecycle hook in Vue 3 Composition API is essential for cleaning up resources when components are destroyed to prevent memory leaks and ensure optimal performance. As the creator of CoreUI with over 11 years of Vue.js development experience, I implement onUnmounted in every component that creates timers, event listeners, or external subscriptions. This hook is called when the component is unmounted from the DOM, making it perfect for cleanup operations.

The ngOnDestroy lifecycle hook in Angular is essential for cleaning up resources when components are destroyed to prevent memory leaks and ensure optimal application performance. As the creator of CoreUI with over 11 years of Angular development experience, I implement ngOnDestroy in every component that has subscriptions, timers, or event listeners. This hook is called just before Angular destroys the component, making it the perfect place for cleanup operations.

Deleting branches after merging features or completing work is essential for maintaining a clean repository structure and organized Git workflow. As the creator of CoreUI, a widely used open-source UI library, I’ve managed thousands of feature branches across various projects over 25 years of development. From my expertise, the safest approach is using git branch -d for local branches and git push origin --delete for remote branches. This keeps your repository organized and prevents accumulation of outdated branches.