Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

array::front

Access the first element.

value&
front() & noexcept;
  » more...

value&&
front() && noexcept;
  » more...

value const&
front() const& noexcept;
  » more...