Program stability concepts in Go - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is program stability in Go?

Program stability means the program runs smoothly without crashing or unexpected errors, even when faced with unusual or wrong inputs.

beginner

How does error handling contribute to program stability in Go?

Error handling lets the program detect problems early and respond properly, preventing crashes and keeping the program running safely.

intermediate

What is the purpose of defer in Go for stability?

The defer keyword schedules a function to run later, usually to clean up resources like files or connections, helping avoid leaks and errors.

intermediate

Why is panic and recover important for program stability?

Panic stops the program when something bad happens, but recover can catch that panic and let the program continue safely instead of crashing.

beginner

How does testing improve program stability?

Testing finds bugs before users do, so fixing them early keeps the program stable and reliable over time.

What does the defer keyword do in Go?

A Runs a function later, usually for cleanup

B Stops the program immediately

C Handles errors automatically

D Starts a new goroutine

defer schedules a function to run after the current function finishes, often used to release resources.

Which Go feature helps catch a panic and prevent a program crash?

A panic

B defer

C go routine

D recover

recover can catch a panic inside a deferred function and allow the program to continue running.

Why is error handling important for program stability?

A It helps detect and manage problems before they crash the program

B It makes the program run faster

C It automatically fixes bugs

D It creates new errors

Handling errors properly prevents unexpected crashes and keeps the program stable.

What is a common use of panic in Go?

A To start a new thread

B To handle normal errors

C To stop the program when a serious error occurs

D To defer a function

panic is used to stop the program immediately when something unrecoverable happens.

How does testing help with program stability?

A By increasing the program size

B By finding bugs before the program runs in production

C By removing all errors automatically

D By making the program run slower

Testing helps find and fix bugs early, which keeps the program stable and reliable.

Explain how Go's defer, panic, and recover work together to improve program stability.

Think about how Go handles errors and resource cleanup safely.

Describe why proper error handling is essential for keeping a Go program stable.

Consider what happens if errors are ignored.