When should I use pass-by-value vs pass-by-reference?

Can you explain the difference between pass-by-value and pass-by-reference?

Sure! Pass-by-value means that a copy of the variable is passed to the function, while pass-by-reference means a reference to the original variable is passed.

When should I use pass-by-value?

Use pass-by-value when you want to ensure that the original data remains unchanged, especially with primitive data types.

And when is pass-by-reference more appropriate?

Pass-by-reference is more appropriate when you need to modify the original data or when passing large data structures to avoid performance overhead.

Can you give me an example of each?

Certainly! For pass-by-value, consider a function that adds two numbers. For pass-by-reference, think of a function that updates an object's properties.