Deck 20: Generics

Question 1

All generic method declarations have a type parameter section delimited by __________.

A) curly brackets ({ and })
B) angle brackets (< and >)
C) square brackets ([ and ] )
D) parenthesis

Answer 1

B

Question 2

When the compiler encounters a method call,it attempts to locate a method declaration that has the same signature as the method call.

Answer 2

True

Question 3

The ________ clause specifies the type constraint for type parameter T.

A) when
B) constraint
C) where
D) cnstr

Answer 3

C

Question 4

A generic method can be overloaded by ________ method.

A) a non-generic method
B) a generic method
C) a and b
D) None of the above

Question 5

Generic methods are often used to perform similar operations on different types of data.

Question 6

Generic methods can be overloaded by non-generic methods that have the same method name and the same or different number of method parameters.

Question 7

Generics provide __________ that allows the compiler to catch invalid types.

A) compile-time type safety
B) compile-time exception checking
C) compile-time error checking
D) run-time type safety

Question 8

Generics make writing a program more __________.

A) elegant
B) cumbersome
C) concise
D) a and c

Question 9

You can use explicit type arguments to indicate the exact type that should be used to call a generic method (e.g.,< int >).

Question 10

Type constraints restrict the type of the argument supplied to a particular type parameter.

Question 11

Which statement is false

A) Each type parameter list contains one or more type parameters, separated by commas.
B) A type parameter name must be unique among different generic methods.
C) The type parameters act as placeholders for the types of the arguments passed to a method.
D) The type parameter names throughout the method declaration must match those declared in the type parameter list.

Question 12

Generic methods can not be overloaded.

Question 13

When a method is called,the compiler tries to find a method that matches the _________ of the method call.

A) name
B) argument types
C) return type
D) a and b
E) All of the above

Question 14

IComparable objects cannot,by default,be used with generic code.

Question 15

A type parameter _____________.

A) is an identifier that is used in place of an actual type name
B) can be used to declare the return type
C) acts as a placeholder for the type of an argument passed to the generic method
D) All of the above

Question 16

It's not possible to apply multiple constraints to a type parameter.

Question 17

__________ enable you to specify,with a single class declaration,a set of related classes.

A) Overloaded classes
B) Overriden classes
C) Generic classes
D) Generics

Question 18

A generic method's body is declared differently than that of any other method.

Question 19

A class can provide two or more generic methods that specify the same method name but with different number of method parameters and/or type parameters.

Question 20

If there's a constructor constraint,the type argument's class must not provide constructors.

Question 21

The type constraints determine the operations that can be performed on the type parameters.

Question 22

A ________ provides a means for describing a class in a type-independent manner.

A) subclass
B) generic class
C) concrete class
D) parameterized class