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
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
boost::date_time::date_duration — Duration type with date level resolution.
// In header: <boost/date_time/date_duration.hpp> template<typename duration_rep_traits> class date_duration : private boost::less_than_comparable1< date_duration< duration_rep_traits >, boost::equality_comparable1< date_duration< duration_rep_traits >, boost::addable1< date_duration< duration_rep_traits >, boost::subtractable1< date_duration< duration_rep_traits >, boost::dividable2< date_duration< duration_rep_traits >, int > > > > > { public: // types typedef duration_rep_traits::int_type duration_rep_type; typedef duration_rep_traits::impl_type duration_rep; // construct/copy/destruct explicit date_duration(duration_rep); date_duration(special_values); date_duration(const date_duration< duration_rep_traits > &); // public member functions duration_rep get_rep() const; bool is_special() const; duration_rep_type days() const; bool operator==(const date_duration &) const; bool operator<(const date_duration &) const; date_duration & operator-=(const date_duration &); date_duration & operator+=(const date_duration &); date_duration operator-() const; date_duration & operator/=(int); bool is_negative() const; // public static functions static date_duration unit(); };
date_duration
public
construct/copy/destructexplicit date_duration(duration_rep day_count);Construct from a day count.
date_duration(special_values sv);
construct from special_values - only works when instantiated with duration_traits_adapted
date_duration(const date_duration< duration_rep_traits > & other);Construct from another
date_duration (Copy Constructor) date_duration public member functionsduration_rep get_rep() const;returns days_ as it's instantiated type - used for streaming
bool is_special() const;
duration_rep_type days() const;returns days as value, not object.
bool operator==(const date_duration & rhs) const;Equality.
bool operator<(const date_duration & rhs) const;Less.
date_duration & operator-=(const date_duration & rhs);Subtract another duration – result is signed.
date_duration & operator+=(const date_duration & rhs);Add a duration – result is signed.
date_duration operator-() const;unary- Allows for dd = -date_duration(2); -> dd == -2
date_duration & operator/=(int divisor);Division operations on a duration with an integer.
bool is_negative() const;return sign information
date_duration public static functionsstatic date_duration unit();Returns the smallest duration – used by to calculate 'end'.