Struct time::Date[][src]

pub struct Date { /* fields omitted */ }

Calendar date.

Years between -100_000 and +100_000 inclusive are guaranteed to be representable. Any values outside this range may have incidental support that can change at any time without notice. If you need support outside this range, please file an issue with your use case.

Implementations

impl Date[src]

pub const fn try_from_ymd(
    year: i32,
    month: u8,
    day: u8
) -> Result<Self, ComponentRange>
[src]

Attempt to create a Date from the year, month, and day.

assert!(Date::try_from_ymd(2019, 1, 1).is_ok());
assert!(Date::try_from_ymd(2019, 12, 31).is_ok());

Returns None if the date is not valid.

assert!(Date::try_from_ymd(2019, 2, 29).is_err()); // 2019 isn't a leap year.

This function is const fn when using rustc >= 1.46.

pub const fn try_from_yo(
    year: i32,
    ordinal: u16
) -> Result<Self, ComponentRange>
[src]

Attempt to create a Date from the year and ordinal day number.

assert!(Date::try_from_yo(2019, 1).is_ok());
assert!(Date::try_from_yo(2019, 365).is_ok());

Returns None if the date is not valid.

assert!(Date::try_from_yo(2019, 366).is_err()); // 2019 isn't a leap year.

This function is const fn when using rustc >= 1.46.

pub const fn try_from_iso_ywd(
    year: i32,
    week: u8,
    weekday: Weekday
) -> Result<Self, ComponentRange>
[src]

Attempt to create a Date from the ISO year, week, and weekday.

assert!(Date::try_from_iso_ywd(2019, 1, Monday).is_ok());
assert!(Date::try_from_iso_ywd(2019, 1, Tuesday).is_ok());
assert!(Date::try_from_iso_ywd(2020, 53, Friday).is_ok());

Returns None if the week is not valid.

assert!(Date::try_from_iso_ywd(2019, 53, Monday).is_err()); // 2019 doesn't have 53 weeks.

This function is const fn when using rustc >= 1.46.

pub fn today() -> Self[src]

👎 Deprecated since 0.2.7:

This method returns a value that assumes an offset of UTC.

Create a Date representing the current date.

assert!(Date::today().year() >= 2019);

pub const fn year(self) -> i32[src]

Get the year of the date.

assert_eq!(date!(2019-01-01).year(), 2019);
assert_eq!(date!(2019-12-31).year(), 2019);
assert_eq!(date!(2020-01-01).year(), 2020);

This function is const fn when using rustc >= 1.46.

pub const fn month(self) -> u8[src]

Get the month. If fetching both the month and day, it is more efficient to use Date::month_day.

The returned value will always be in the range 1..=12.

assert_eq!(date!(2019-01-01).month(), 1);
assert_eq!(date!(2019-12-31).month(), 12);

This function is const fn when using rustc >= 1.46.

pub const fn day(self) -> u8[src]

Get the day of the month. If fetching both the month and day, it is more efficient to use Date::month_day.

The returned value will always be in the range 1..=31.

assert_eq!(date!(2019-01-01).day(), 1);
assert_eq!(date!(2019-12-31).day(), 31);

This function is const fn when using rustc >= 1.46.

pub const fn month_day(self) -> (u8, u8)[src]

Get the month and day. This is more efficient than fetching the components individually.

The month component will always be in the range 1..=12; the day component in 1..=31.

assert_eq!(date!(2019-01-01).month_day(), (1, 1));
assert_eq!(date!(2019-12-31).month_day(), (12, 31));

This function is const fn when using rustc >= 1.46.

pub const fn ordinal(self) -> u16[src]

Get the day of the year.

The returned value will always be in the range 1..=366 (1..=365 for common years).

assert_eq!(date!(2019-01-01).ordinal(), 1);
assert_eq!(date!(2019-12-31).ordinal(), 365);

This function is const fn when using rustc >= 1.46.

pub const fn iso_year_week(self) -> (i32, u8)[src]

Get the ISO 8601 year and week number.

assert_eq!(date!(2019-01-01).iso_year_week(), (2019, 1));
assert_eq!(date!(2019-10-04).iso_year_week(), (2019, 40));
assert_eq!(date!(2020-01-01).iso_year_week(), (2020, 1));
assert_eq!(date!(2020-12-31).iso_year_week(), (2020, 53));
assert_eq!(date!(2021-01-01).iso_year_week(), (2020, 53));

This function is const fn when using rustc >= 1.46.

pub const fn week(self) -> u8[src]

Get the ISO week number.

The returned value will always be in the range 1..=53.

assert_eq!(date!(2019-01-01).week(), 1);
assert_eq!(date!(2019-10-04).week(), 40);
assert_eq!(date!(2020-01-01).week(), 1);
assert_eq!(date!(2020-12-31).week(), 53);
assert_eq!(date!(2021-01-01).week(), 53);

This function is const fn when using rustc >= 1.46.

pub const fn sunday_based_week(self) -> u8[src]

Get the week number where week 1 begins on the first Sunday.

The returned value will always be in the range 0..=53.

assert_eq!(date!(2019-01-01).sunday_based_week(), 0);
assert_eq!(date!(2020-01-01).sunday_based_week(), 0);
assert_eq!(date!(2020-12-31).sunday_based_week(), 52);
assert_eq!(date!(2021-01-01).sunday_based_week(), 0);

This function is const fn when using rustc >= 1.46.

pub const fn monday_based_week(self) -> u8[src]

Get the week number where week 1 begins on the first Monday.

The returned value will always be in the range 0..=53.

assert_eq!(date!(2019-01-01).monday_based_week(), 0);
assert_eq!(date!(2020-01-01).monday_based_week(), 0);
assert_eq!(date!(2020-12-31).monday_based_week(), 52);
assert_eq!(date!(2021-01-01).monday_based_week(), 0);

This function is const fn when using rustc >= 1.46.

pub const fn as_ymd(self) -> (i32, u8, u8)[src]

Get the year, month, and day.

assert_eq!(date!(2019-01-01).as_ymd(), (2019, 1, 1));

This function is const fn when using rustc >= 1.46.

pub const fn as_yo(self) -> (i32, u16)[src]

Get the year and ordinal day number.

assert_eq!(date!(2019-01-01).as_yo(), (2019, 1));

This function is const fn when using rustc >= 1.46.

pub fn weekday(self) -> Weekday[src]

Get the weekday.

This current uses Zeller’s congruence internally.

assert_eq!(date!(2019-01-01).weekday(), Tuesday);
assert_eq!(date!(2019-02-01).weekday(), Friday);
assert_eq!(date!(2019-03-01).weekday(), Friday);
assert_eq!(date!(2019-04-01).weekday(), Monday);
assert_eq!(date!(2019-05-01).weekday(), Wednesday);
assert_eq!(date!(2019-06-01).weekday(), Saturday);
assert_eq!(date!(2019-07-01).weekday(), Monday);
assert_eq!(date!(2019-08-01).weekday(), Thursday);
assert_eq!(date!(2019-09-01).weekday(), Sunday);
assert_eq!(date!(2019-10-01).weekday(), Tuesday);
assert_eq!(date!(2019-11-01).weekday(), Friday);
assert_eq!(date!(2019-12-01).weekday(), Sunday);

pub fn next_day(self) -> Self[src]

Get the next calendar date.

assert_eq!(date!(2019-01-01).next_day(), date!(2019-01-02));
assert_eq!(date!(2019-01-31).next_day(), date!(2019-02-01));
assert_eq!(date!(2019-12-31).next_day(), date!(2020-01-01));

pub fn previous_day(self) -> Self[src]

Get the previous calendar date.

assert_eq!(date!(2019-01-02).previous_day(), date!(2019-01-01));
assert_eq!(date!(2019-02-01).previous_day(), date!(2019-01-31));
assert_eq!(date!(2020-01-01).previous_day(), date!(2019-12-31));

pub const fn julian_day(self) -> i64[src]

Get the Julian day for the date.

The algorithm to perform this conversion is derived from one provided by Peter Baum; it is freely available here.

assert_eq!(date!(-4713-11-24).julian_day(), 0);
assert_eq!(date!(2000-01-01).julian_day(), 2_451_545);
assert_eq!(date!(2019-01-01).julian_day(), 2_458_485);
assert_eq!(date!(2019-12-31).julian_day(), 2_458_849);

This function is const fn when using rustc >= 1.46.

pub fn from_julian_day(julian_day: i64) -> Self[src]

Create a Date from the Julian day.

The algorithm to perform this conversion is derived from one provided by Peter Baum; it is freely available here.

assert_eq!(
    Date::from_julian_day(0),
    date!(-4713-11-24)
);
assert_eq!(Date::from_julian_day(2_451_545), date!(2000-01-01));
assert_eq!(Date::from_julian_day(2_458_485), date!(2019-01-01));
assert_eq!(Date::from_julian_day(2_458_849), date!(2019-12-31));

impl Date[src]

Methods to add a Time component, resulting in a PrimitiveDateTime.

pub const fn midnight(self) -> PrimitiveDateTime[src]

Create a PrimitiveDateTime using the existing date. The Time component will be set to midnight.

assert_eq!(
    date!(1970-01-01).midnight(),
    date!(1970-01-01).with_time(time!(0:00))
);

pub const fn with_time(self, time: Time) -> PrimitiveDateTime[src]

Create a PrimitiveDateTime using the existing date and the provided Time.

assert_eq!(
    date!(1970-01-01).with_time(time!(0:00)),
    date!(1970-01-01).midnight(),
);

pub const fn try_with_hms(
    self,
    hour: u8,
    minute: u8,
    second: u8
) -> Result<PrimitiveDateTime, ComponentRange>
[src]

Attempt to create a PrimitiveDateTime using the existing date and the provided time.

assert!(date!(1970-01-01).try_with_hms(0, 0, 0).is_ok());
assert!(date!(1970-01-01).try_with_hms(24, 0, 0).is_err());

This function is const fn when using rustc >= 1.46.

pub const fn try_with_hms_milli(
    self,
    hour: u8,
    minute: u8,
    second: u8,
    millisecond: u16
) -> Result<PrimitiveDateTime, ComponentRange>
[src]

Attempt to create a PrimitiveDateTime using the existing date and the provided time.

assert!(date!(1970-01-01).try_with_hms_milli(0, 0, 0, 0).is_ok());
assert!(date!(1970-01-01).try_with_hms_milli(24, 0, 0, 0).is_err());

This function is const fn when using rustc >= 1.46.

pub const fn try_with_hms_micro(
    self,
    hour: u8,
    minute: u8,
    second: u8,
    microsecond: u32
) -> Result<PrimitiveDateTime, ComponentRange>
[src]

Attempt to create a PrimitiveDateTime using the existing date and the provided time.

assert!(date!(1970-01-01)
    .try_with_hms_micro(0, 0, 0, 0)
    .is_ok());
assert!(date!(1970-01-01)
    .try_with_hms_micro(24, 0, 0, 0)
    .is_err());

This function is const fn when using rustc >= 1.46.

pub const fn try_with_hms_nano(
    self,
    hour: u8,
    minute: u8,
    second: u8,
    nanosecond: u32
) -> Result<PrimitiveDateTime, ComponentRange>
[src]

Attempt to create a PrimitiveDateTime using the existing date and the provided time.

assert!(date!(1970-01-01).try_with_hms_nano(0, 0, 0, 0).is_ok());
assert!(date!(1970-01-01).try_with_hms_nano(24, 0, 0, 0).is_err());

This function is const fn when using rustc >= 1.46.

impl Date[src]

Methods that allow formatting the Date.

pub fn format(self, format: impl AsRef<str>) -> String[src]

Format the Date using the provided string.

assert_eq!(date!(2019-01-02).format("%Y-%m-%d"), "2019-01-02");

pub fn lazy_format(self, format: impl AsRef<str>) -> impl Display[src]

Format the Date using the provided string.

assert_eq!(date!(2019-01-02).lazy_format("%Y-%m-%d").to_string(), "2019-01-02");

pub fn parse(s: impl AsRef<str>, format: impl AsRef<str>) -> Result<Self, Error>[src]

Attempt to parse a Date using the provided string.

assert_eq!(
    Date::parse("2019-01-02", "%F"),
    Ok(date!(2019-01-02))
);
assert_eq!(
    Date::parse("2019-002", "%Y-%j"),
    Ok(date!(2019-002))
);
assert_eq!(
    Date::parse("2019-W01-3", "%G-W%V-%u"),
    Ok(date!(2019-W01-3))
);

Trait Implementations

impl Add<Duration> for Date[src]

type Output = Self

The resulting type after applying the + operator.

impl Add<Duration> for Date[src]

type Output = Self

The resulting type after applying the + operator.

impl AddAssign<Duration> for Date[src]

impl AddAssign<Duration> for Date[src]

impl Clone for Date[src]

impl Copy for Date[src]

impl Debug for Date[src]

impl Display for Date[src]

impl Eq for Date[src]

impl Hash for Date[src]

impl Ord for Date[src]

impl PartialEq<Date> for Date[src]

impl PartialOrd<Date> for Date[src]

impl StructuralEq for Date[src]

impl StructuralPartialEq for Date[src]

impl Sub<Date> for Date[src]

type Output = Duration

The resulting type after applying the - operator.

impl Sub<Duration> for Date[src]

type Output = Self

The resulting type after applying the - operator.

impl Sub<Duration> for Date[src]

type Output = Self

The resulting type after applying the - operator.

impl SubAssign<Duration> for Date[src]

impl SubAssign<Duration> for Date[src]

Auto Trait Implementations

impl RefUnwindSafe for Date

impl Send for Date

impl Sync for Date

impl Unpin for Date

impl UnwindSafe for Date

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> Sealed<T> for T where
    T: ?Sized
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T> ToString for T where
    T: Display + ?Sized
[src]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.