What are the performance differences between closures and callbacks?

What are the performance differences between closures and callbacks?

Closures can be more memory-intensive due to their ability to capture variables from their surrounding scope, while callbacks are generally lighter.

Can you give an example of when to use a closure over a callback?

Sure! Use closures when you need to maintain state across function calls, like in a counter function.

Are there any scenarios where callbacks are preferred?

Yes, callbacks are preferred in asynchronous operations, like handling events or making API calls, due to their simplicity.

How do closures affect garbage collection?

Closures can prevent garbage collection of variables they capture, which may lead to memory leaks if not managed properly.

What are some best practices for using closures and callbacks?

Best practices include minimizing the use of closures in performance-critical code and ensuring callbacks are properly managed to avoid callback hell.