1. What is Struct ? Junior A. an optimization that defers duplicating backing storage until a shared instance is actually mutated B. a value type that is copied when assigned or passed, with each copy independent C. a function on a value type that is marked to allow it to modify the instance's own properties D. a reference type whose instances are shared, so multiple variables point to the same object
2. Which term means: "a value type that is copied when assigned or passed, with each copy independent"? Junior A. Mutating method B. Copy-on-write C. Struct D. Value semantics
3. Which statement is correct? Junior A. Struct — a value type that is copied when assigned or passed, with each copy independent B. Struct — a function on a value type that is marked to allow it to modify the instance's own properties C. Struct — a reference type whose instances are shared, so multiple variables point to the same object D. Struct — an optimization that defers duplicating backing storage until a shared instance is actually mutated
4. What is Class ? Junior A. a value type that is copied when assigned or passed, with each copy independent B. a function on a value type that is marked to allow it to modify the instance's own properties C. an optimization that defers duplicating backing storage until a shared instance is actually mutated D. a reference type whose instances are shared, so multiple variables point to the same object
5. Which term means: "a reference type whose instances are shared, so multiple variables point to the same object"? Junior A. Value semantics B. Class C. Mutating method D. Copy-on-write
6. Which statement is correct? Junior A. Class — a function on a value type that is marked to allow it to modify the instance's own properties B. Class — a reference type whose instances are shared, so multiple variables point to the same object C. Class — behavior where mutating one variable never affects another that was assigned from it D. Class — a value type that is copied when assigned or passed, with each copy independent
7. What is Value semantics ? Mid A. behavior where mutating one variable never affects another that was assigned from it B. a value type that is copied when assigned or passed, with each copy independent C. an optimization that defers duplicating backing storage until a shared instance is actually mutated D. a reference type whose instances are shared, so multiple variables point to the same object
8. Which term means: "behavior where mutating one variable never affects another that was assigned from it"? Mid A. Value semantics B. Copy-on-write C. Struct D. Mutating method
9. Which statement is correct? Mid A. Value semantics — a function on a value type that is marked to allow it to modify the instance's own properties B. Value semantics — an optimization that defers duplicating backing storage until a shared instance is actually mutated C. Value semantics — a value type that is copied when assigned or passed, with each copy independent D. Value semantics — behavior where mutating one variable never affects another that was assigned from it
10. What is Copy-on-write ? Senior A. a function on a value type that is marked to allow it to modify the instance's own properties B. a reference type whose instances are shared, so multiple variables point to the same object C. an optimization that defers duplicating backing storage until a shared instance is actually mutated D. a value type that is copied when assigned or passed, with each copy independent
11. Which term means: "an optimization that defers duplicating backing storage until a shared instance is actually mutated"? Senior A. Struct B. Copy-on-write C. Class D. Value semantics
12. Which statement is correct? Senior A. Copy-on-write — a function on a value type that is marked to allow it to modify the instance's own properties B. Copy-on-write — an optimization that defers duplicating backing storage until a shared instance is actually mutated C. Copy-on-write — a reference type whose instances are shared, so multiple variables point to the same object D. Copy-on-write — behavior where mutating one variable never affects another that was assigned from it
13. What is Mutating method ? Mid A. behavior where mutating one variable never affects another that was assigned from it B. a reference type whose instances are shared, so multiple variables point to the same object C. a value type that is copied when assigned or passed, with each copy independent D. a function on a value type that is marked to allow it to modify the instance's own properties
14. Which term means: "a function on a value type that is marked to allow it to modify the instance's own properties"? Mid A. Class B. Struct C. Mutating method D. Copy-on-write
15. Which statement is correct? Mid A. Mutating method — behavior where mutating one variable never affects another that was assigned from it B. Mutating method — a value type that is copied when assigned or passed, with each copy independent C. Mutating method — a reference type whose instances are shared, so multiple variables point to the same object D. Mutating method — a function on a value type that is marked to allow it to modify the instance's own properties