Struct template eu_dst_trait

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Struct template eu_dst_trait

boost::date_time::eu_dst_trait — Rules for daylight savings start in the EU (Last Sun in Mar).

Synopsis

template<typename date_type> 
struct eu_dst_trait {
  // types
  typedef date_type::day_of_week_type                day_of_week_type;  
  typedef date_type::month_type                      month_type;        
  typedef date_time::last_kday_of_month< date_type > start_rule_functor;
  typedef date_time::last_kday_of_month< date_type > end_rule_functor;  

  // public static functions
  day_of_week_type start_day() ;
  month_type start_month() ;
  day_of_week_type end_day() ;
  month_type end_month() ;
  int dst_start_offset_minutes() ;
  int dst_end_offset_minutes() ;
  int dst_shift_length_minutes() ;
};

Description

These amount to the following:

Start of dst day is last Sunday in March
End day of dst is last Sunday in Oct
Going forward switch time is 2:00 am (offset 120 minutes)
Going back switch time is 3:00 am (off set 180 minutes)
Shift duration is one hour (60 minutes)

`eu_dst_trait` public static functions

```
day_of_week_type start_day() ;
```
```
month_type start_month() ;
```
```
day_of_week_type end_day() ;
```
```
month_type end_month() ;
```
```
int dst_start_offset_minutes() ;
```
```
int dst_end_offset_minutes() ;
```
```
int dst_shift_length_minutes() ;
```

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