C++ Standard Library.

The containers, iterators and algorithms a C++ course teaches after the language itself. Covers 14 topics.

• C++ Standard Library · 1 of 3

  optional & variant

  In C++, what does assigning std::nullopt to a std::optional<T> do?

  Astores an error code inside itBresets the held value to T{}Cleaves it holding no valueDsets the held value to zero

• C++ Standard Library · 2 of 3

  span & views

  On a platform where int is 4 bytes, what does std::as_bytes return when given a std::span<int> over four ints?

  A16 mutable std::byteB4 elements of intC16 const std::byteDa copy of 16 bytes

• C++ Standard Library · 3 of 3

  tuple & pair

  In C++20, what does operator<=> on two std::tuple objects return?

  Aan int holding the index of the first differenceBa std::tuple of per-element comparison resultsCa comparison category object compared against 0Da bool that is true when the tuples are equal