Struct chrono::naive::IsoWeek [−][src]
pub struct IsoWeek { /* fields omitted */ }
Expand description
ISO 8601 week.
This type, combined with Weekday
,
constitues the ISO 8601 week date.
One can retrieve this type from the existing Datelike
types
via the Datelike::iso_week
method.
Implementations
Returns the year number for this ISO week.
Example
use chrono::{NaiveDate, Datelike, Weekday};
let d = NaiveDate::from_isoywd(2015, 1, Weekday::Mon);
assert_eq!(d.iso_week().year(), 2015);
This year number might not match the calendar year number. Continuing the example…
assert_eq!(d.year(), 2014);
assert_eq!(d, NaiveDate::from_ymd(2014, 12, 29));
Returns the ISO week number starting from 1.
The return value ranges from 1 to 53. (The last week of year differs by years.)
Example
use chrono::{NaiveDate, Datelike, Weekday};
let d = NaiveDate::from_isoywd(2015, 15, Weekday::Mon);
assert_eq!(d.iso_week().week(), 15);
Returns the ISO week number starting from 0.
The return value ranges from 0 to 52. (The last week of year differs by years.)
Example
use chrono::{NaiveDate, Datelike, Weekday};
let d = NaiveDate::from_isoywd(2015, 15, Weekday::Mon);
assert_eq!(d.iso_week().week0(), 14);
Trait Implementations
The Debug
output of the ISO week w
is the same as
d.format("%G-W%V")
where d
is any NaiveDate
value in that week.
Example
use chrono::{NaiveDate, Datelike};
assert_eq!(format!("{:?}", NaiveDate::from_ymd(2015, 9, 5).iso_week()), "2015-W36");
assert_eq!(format!("{:?}", NaiveDate::from_ymd( 0, 1, 3).iso_week()), "0000-W01");
assert_eq!(format!("{:?}", NaiveDate::from_ymd(9999, 12, 31).iso_week()), "9999-W52");
ISO 8601 requires an explicit sign for years before 1 BCE or after 9999 CE.
assert_eq!(format!("{:?}", NaiveDate::from_ymd( 0, 1, 2).iso_week()), "-0001-W52");
assert_eq!(format!("{:?}", NaiveDate::from_ymd(10000, 12, 31).iso_week()), "+10000-W52");
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Auto Trait Implementations
impl RefUnwindSafe for IsoWeek
impl UnwindSafe for IsoWeek
Blanket Implementations
Mutably borrows from an owned value. Read more