1. What is Result ? Junior A. a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure B. a method that extracts the contained success value but triggers an abort if the value is absent or an error C. the enum with Ok and Err variants used to return either a success value or a recoverable failure D. an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures
2. Which term means: "the enum with Ok and Err variants used to return either a success value or a recoverable failure"? Junior A. unwrap B. expect C. panic D. Result
3. Which statement is correct? Junior A. Result — the enum with Some and None variants representing a value that may be present or absent, replacing null B. Result — an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures C. Result — the enum with Ok and Err variants used to return either a success value or a recoverable failure D. Result — a method like unwrap that extracts the value but lets the caller supply a custom message shown on failure
4. What is Option ? Junior A. an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures B. the enum with Ok and Err variants used to return either a success value or a recoverable failure C. the enum with Some and None variants representing a value that may be present or absent, replacing null D. a method that extracts the contained success value but triggers an abort if the value is absent or an error
5. Which term means: "the enum with Some and None variants representing a value that may be present or absent, replacing null"? Junior A. unwrap B. Option C. panic D. Question-mark operator
6. Which statement is correct? Junior A. Option — a method like unwrap that extracts the value but lets the caller supply a custom message shown on failure B. Option — a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure C. Option — a method that extracts the contained success value but triggers an abort if the value is absent or an error D. Option — the enum with Some and None variants representing a value that may be present or absent, replacing null
7. What is Question-mark operator ? Mid A. a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure B. a method that extracts the contained success value but triggers an abort if the value is absent or an error C. an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures D. the enum with Ok and Err variants used to return either a success value or a recoverable failure
8. Which term means: "a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure"? Mid A. Option B. expect C. Result D. Question-mark operator
9. Which statement is correct? Mid A. Question-mark operator — a method like unwrap that extracts the value but lets the caller supply a custom message shown on failure B. Question-mark operator — a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure C. Question-mark operator — the enum with Ok and Err variants used to return either a success value or a recoverable failure D. Question-mark operator — a method that extracts the contained success value but triggers an abort if the value is absent or an error
10. What is panic ? Mid A. a method that extracts the contained success value but triggers an abort if the value is absent or an error B. an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures C. the enum with Some and None variants representing a value that may be present or absent, replacing null D. the enum with Ok and Err variants used to return either a success value or a recoverable failure
11. Which term means: "an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures"? Mid A. panic B. Question-mark operator C. expect D. Result
12. Which statement is correct? Mid A. panic — the enum with Some and None variants representing a value that may be present or absent, replacing null B. panic — an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures C. panic — a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure D. panic — a method that extracts the contained success value but triggers an abort if the value is absent or an error
13. What is unwrap ? Junior A. an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures B. the enum with Ok and Err variants used to return either a success value or a recoverable failure C. a method that extracts the contained success value but triggers an abort if the value is absent or an error D. the enum with Some and None variants representing a value that may be present or absent, replacing null
14. Which term means: "a method that extracts the contained success value but triggers an abort if the value is absent or an error"? Junior A. panic B. unwrap C. Result D. expect
15. Which statement is correct? Junior A. unwrap — a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure B. unwrap — an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures C. unwrap — the enum with Some and None variants representing a value that may be present or absent, replacing null D. unwrap — a method that extracts the contained success value but triggers an abort if the value is absent or an error
16. What is expect ? Junior A. a method that extracts the contained success value but triggers an abort if the value is absent or an error B. the enum with Some and None variants representing a value that may be present or absent, replacing null C. a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure D. a method like unwrap that extracts the value but lets the caller supply a custom message shown on failure
17. Which term means: "a method like unwrap that extracts the value but lets the caller supply a custom message shown on failure"? Junior A. Result B. Option C. expect D. panic
18. Which statement is correct? Junior A. expect — a method like unwrap that extracts the value but lets the caller supply a custom message shown on failure B. expect — the enum with Ok and Err variants used to return either a success value or a recoverable failure C. expect — an unrecoverable abort that unwinds or terminates the current thread, used for bugs and broken invariants rather than expected failures D. expect — a postfix operator that unwraps a success value or returns the error early from the enclosing function on failure