Learn: Defensive Programming

Welcome!Today we'll learn about defensive programming. It's a way to write programs that handle unexpected situations and errors effectively.

What is Defensive Programming?Defensive programming is a method of coding designed to ensure programs work correctly even in unexpected situations. It involves anticipating potential errors or misuse and designing the program to handle them gracefully.

Why is Defensive Programming Important?It's important because it makes programs more reliable, secure, and easier to maintain. By preparing for errors, the program is less likely to crash or behave unpredictably.

Input ValidationInput validation ensures any data entered into a program is correct and safe to process. For example, if a program expects a number, it should check that the input is not text or symbols.

MaintainabilityDefensive programming improves maintainability. This means the program is easier to update, debug, and understand. Using clear variable names, comments, and organising code into subprograms helps achieve this.

AuthenticationAuthentication is a way to ensure only authorised users can access the program. It often involves passwords or verification methods.

Review Time!Great work! You've learned about defensive programming concepts like input validation, authentication, and maintainability. Let's test your understanding with a few questions.

Final ThoughtsDefensive programming helps prevent errors, keeps programs secure, and ensures they are easier to maintain. It's an essential technique for creating reliable software.