What are some common mistakes in parameter passing?

What are some common mistakes in parameter passing?

Common mistakes include passing by value instead of by reference, not validating parameters, and incorrect data types.

Can you explain what passing by value means?

Passing by value means that a copy of the variable is passed to the function, so changes made inside the function do not affect the original variable.

What about passing by reference?

Passing by reference means that a reference to the original variable is passed, allowing the function to modify the original variable directly.

How can I avoid these mistakes?

To avoid mistakes, always validate inputs, understand the difference between value and reference passing, and use clear documentation.