pub struct IsoWeek { /* private fields */ }
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

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

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");

Formats the value using the given formatter. Read more

This method returns an Ordering between self and other. Read more

Compares and returns the maximum of two values. Read more

Compares and returns the minimum of two values. Read more

Restrict a value to a certain interval. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

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

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.