Final

Question 1

Implement a template class definition for pair

Answer 1

template
 class Pair
 {
 public:
 Pair(const F& a, const S& b);
 F get_first() const;
 S get_second() const;

private:
F first;
S second;
};

Question 2

Implement the constructor for the template pair function (type F and S)

Answer 2

template
Pair::Pair(const F& a, const S& b)
{
 first = a;
 second = b;
}

Question 3

implement the get_first function for the template pair function (type F and S)

Answer 3

template
F Pair::get_first() const
{
 return first;
}

Question 4

In this example CMP may be either a \_\_\_\_\_ or a \_\_\_\_\_\_\_\_
template
T max(const T& left, const T& right, CMP cmp)
{
 if (cmp(left, right))
 return right;
 return left;
}

Answer 4

Actual function or function object

Question 5

what is the syntax for a template max function comparing employee objects alice & fred with functor CompareBySalary

Answer 5

max(alice, fred, CompareBySalary());

Question 6

What is the error here?
OrderedCollection a;
OrderedCollection b;
void f(OrderedCollection& c);
f(a);
f(b);

Answer 6

f(a); // Error - types don’t match

Question 7

• When designing functions , order parameters such that
• those _____ likely to use a default appear first
• those ___likely to have a default value appear last.

Answer 7

• When designing functions , order parameters such that
• those least likely to use a default appear first
• those most likely to have a default value appear last.

Question 8

What is the header of a class OrderedCollection using the Less functor?

Answer 8

template >
class OrderedCollection
{
 ...
}

Question 9

What is the advantage of defining a make_pair function t as a template class?

Answer 9

We can execute a line like this auto pair1 = make_pair(5, “red”);

Question 10

\_\_\_\_\_ template is a template function or class that can take a
varying number of parameters

Answer 10

Variadic template

Question 11

Variadic templates use varying parameters also known as _______ _____

Answer 11

parameter pack

Question 12

Implement a print function that can take any number of inputs

Answer 12

void display(){}
template
void display(const Tfirst& param1, const Trest&…
params)
{std::cout <
void print(const Tvals& … parameters){
display(parameters…);}