Go quiz

Test your Go knowledge with a free interactive quiz — 50 questions with answers and explanations. No signup needed to play.

What does a Go module manifest live in?

1. What does a Go module manifest live in?
2. Which built-in adds an element to a slice?
3. What does this compute: `len([]int{1, 2, 3, 4})`?
4. What does `defer file.Close()` placed right after `file, _ := os.Open(...)` do?
5. What does `defer` do?
6. What is the zero value of a `bool`?
7. How do you pause until a channel receives a value?
8. Which built-in returns the capacity (not length) of a slice?
9. What does the `:=` blank identifier `_` do?
10. What does `nil` represent in Go?
11. What does this print: `s := "héllo"; fmt.Println(len(s))`?
12. Which short-variable-declaration form is valid only inside a function?

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