Boost C++ Libraries

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Class template dst_day_calc_rule

boost::date_time::dst_day_calc_rule — Defines base interface for calculating start and end date of daylight savings.

Synopsis

// In header: <boost/date_time/dst_transition_generators.hpp>

template<typename date_type> 
class dst_day_calc_rule {
public:
  // types
  typedef date_type::year_type year_type;

  // construct/copy/destruct
  ~dst_day_calc_rule();

  // public member functions
  virtual date_type start_day(year_type) const = 0;
  virtual std::string start_rule_as_string() const = 0;
  virtual date_type end_day(year_type) const = 0;
  virtual std::string end_rule_as_string() const = 0;
};

Description

`dst_day_calc_rule` public construct/copy/destruct

```
~dst_day_calc_rule();
```

`dst_day_calc_rule` public member functions

virtual date_type start_day(year_type y) const = 0;

virtual std::string start_rule_as_string() const = 0;

virtual date_type end_day(year_type y) const = 0;

virtual std::string end_rule_as_string() const = 0;