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
This is an older version of Boost and was released in 2024. The current version is 1.90.0.
Access an element, with bounds checking.
value& at(string_viewkey,boost::source_locationconst& loc = BOOST_CURRENT_LOCATION) &; »more...value&& at(string_viewkey,boost::source_locationconst& loc = BOOST_CURRENT_LOCATION) &&; »more...valueconst& at(string_viewkey,boost::source_locationconst& loc = BOOST_CURRENT_LOCATION) const&; »more...value& at(std::size_tpos,boost::source_locationconst& loc = BOOST_CURRENT_LOCATION) &; »more...value&& at(std::size_tpos,boost::source_locationconst& loc = BOOST_CURRENT_LOCATION) &&; »more...valueconst& at(std::size_tpos,boost::source_locationconst& loc = BOOST_CURRENT_LOCATION) const&; »more...