Struct Date 

pub struct Date { /* private fields */ }

Generic representation of date. Identifies an exact individual date within the calendar, in terms of days before (negative) or after (positive) 1970-01-01. This makes it useful as universal type that can be converted to and from other calendrical types.

Note that this type is not associated with a time zone: rather, it represents the local time in some implicit time zone.

It is explicitly not possible to subtract one Date from another to obtain a duration. This choice is made to prevent errors due to leap seconds, which cannot be incorporated in a purely calendrical type. Rather, a date must be mapped towards a proper time scale first, before such arithmetic is possible. It is possible to add full days to a Date.

Implementations

impl Date

pub const fn new(days: Days) -> Date

impl Date

pub const fn from_time_since_epoch(days: Days) -> Self

Creates a date from the given number of days since 1970-01-01.

pub const fn time_since_epoch(&self) -> Days

The number of days since the epoch of this representation - midnight 1970.

pub fn elapsed_calendar_days_since(self, other: Self) -> Days

Returns the number of elapsed calendar days since the passed date. Beware: the returned value represents strictly the number of elapsed calendar (!) days. While it is expressed as a duration, the possibility of leap seconds is ignored. Only interpret the returned value as an exact duration if no leap seconds occurred between both days.

impl Date

pub const fn from_historic_date( year: i32, month: Month, day: u8, ) -> Result<Self, InvalidHistoricDate>

Creates a Date based on a year-month-day date in the historic calendar.

pub const fn from_gregorian_date( year: i32, month: Month, day: u8, ) -> Result<Self, InvalidGregorianDate>

Creates a Date based on a year-month-day date in the proleptic Gregorian calendar.

pub const fn from_julian_date( year: i32, month: Month, day: u8, ) -> Result<Self, InvalidJulianDate>

Creates a Date based on a year-month-day date in the proleptic Julian calendar.

pub const fn week_day(&self) -> WeekDay

Returns the day-of-the-week of this date.

Trait Implementations

impl Add<Days> for Date

type Output = Date

The resulting type after applying the + operator.

fn add(self, rhs: Days) -> Self

Performs the + operation.

impl AddAssign<Days> for Date

where Days: AddAssign,

fn add_assign(&mut self, rhs: Days)

Performs the += operation.

impl Clone for Date

fn clone(&self) -> Date

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Date

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Date> for GregorianDate

fn from(value: Date) -> Self

Converts to this type from the input type.

impl From<Date> for HistoricDate

fn from(value: Date) -> Self

Converts to this type from the input type.

impl From<Date> for JulianDate

fn from(value: Date) -> Self

Converts to this type from the input type.

impl From<Date> for ModifiedJulianDate

fn from(value: Date) -> Self

Converts to this type from the input type.

impl From<GregorianDate> for Date

fn from(value: GregorianDate) -> Self

Converts to this type from the input type.

impl From<HistoricDate> for Date

fn from(value: HistoricDate) -> Self

Converts to this type from the input type.

impl From<JulianDate> for Date

fn from(value: JulianDate) -> Self

Converts to this type from the input type.

impl From<ModifiedJulianDate> for Date

fn from(value: ModifiedJulianDate) -> Self

Converts to this type from the input type.

impl Hash for Date

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Date

fn cmp(&self, other: &Date) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Date

fn eq(&self, other: &Date) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Date

fn partial_cmp(&self, other: &Date) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub<Days> for Date

type Output = Date

The resulting type after applying the - operator.

fn sub(self, rhs: Days) -> Self

Performs the - operation.

impl SubAssign<Days> for Date

where Days: SubAssign,

fn sub_assign(&mut self, rhs: Days)

Performs the -= operation.

impl Copy for Date

impl Eq for Date

impl StructuralPartialEq for Date