What are the best practices for using Go's defer statement?

What are the best practices for using Go's defer statement?

Using 'defer' in Go is great for resource management. Best practices include deferring close statements immediately after opening resources, and being mindful of the execution order.

Can you explain why the execution order matters?

Sure! Defer statements are executed in LIFO order, meaning the last deferred function is executed first. This can affect resource cleanup if not managed properly.

Are there any performance considerations I should be aware of?

Yes, while 'defer' is convenient, it can introduce overhead. If performance is critical, consider using direct function calls instead of deferring.

What are some common mistakes to avoid with defer?

Common mistakes include deferring in loops without understanding the implications, and deferring functions that may return errors.