Sources:
- http://www.cplusplus.com/doc/tutorial/
- http://theboostcpplibraries.com/
- https://www.topcoder.com/community/data-science/data-science-tutorials/power-up-c-with-the-standard-template-library-part-1/
- https://www.topcoder.com/community/data-science/data-science-tutorials/power-up-c-with-the-standard-template-library-part-2/