Explore the full potential of C++ by mastering the standard library.

Become a C++ Programmer

The C++ standard library is a collection of all the tools and utilities available in C++. It received its latest update in 2017, known as C++17. The update introduces many new features that further optimize our code. This module will help us fully grasp C++ and use it to its full potential.

C++ Standard Library

You can create tuples of arbitrary length and types with [std::tuple](http://en.cppreference.com/w/cpp/utility/tuple). The class template needs the header `<tuple>`. `std::tuple` is a generalization of `std::pair`. You can convert between tuples with two elements and pairs. The tuple has, like his younger brother `std::pair`, a default, a copy, and a move constructor. You can swap tuples with the function `std::swap`. 

The i-th element of a tuple t can be referenced by the function template `std::get`: `std::get<i-1>(t)`. By `std::get<type>(t)` you can directly refer to the element of the type `type`.

Tuples support the comparison operators `==`, `!=`, `<`, `>`, `<=` and `>=`. If you compare two tuples, the elements of the tuples will be compared lexicographically. The comparison starts at index 0.

# std::make_tuple

The helper function [std::make_tuple](http://en.cppreference.com/w/cpp/utility/tuple/make_tuple) is quite convenient for the creation of tuples. You don't have to provide the types. The compiler automatically deduces them.


Tuples extend the principles of a pair to a broader perspective. Find out more in this lesson.