Learning Boost C++

Self-test questions

For multiple choice questions, choose all the options that apply:

1. Which of the following overloads/specializations does the call foo(1.0, std::string("Hello")) resolve to?

   a. template <typename T, typename U> foo(T, U);

   b. foo(double, std::string&);

   c. template <> foo<double, std::string>

   d. There is ambiguity

2. What is the interface that a metafunction must satisfy?

   a. It must have a static value field

   b. It must have an embedded type called type

   c. It must have a static type field

   d. It must have an embedded type called result

3. What does the following statement do: boost::mpl::or_<boost::is_floating_point<T>, boost::is_signed<T>>?

   a. Checks whether type T is signed and a floating point type

   b. Generates a metafunction that checks (a)

   c. Checks ...