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

Function bool_switch

boost::program_options::bool_switch

Synopsis

// In header: <boost/program_options/value_semantic.hpp>


BOOST_PROGRAM_OPTIONS_DECL typed_value< bool > * bool_switch();
BOOST_PROGRAM_OPTIONS_DECL typed_value< bool > * bool_switch(bool * v);

Description

Works the same way as the 'value<bool>' function, but the created value_semantic won't accept any explicit value. So, if the option is present on the command line, the value will be 'true'.