Struct time::PrimitiveDateTime

pub struct PrimitiveDateTime { /* fields omitted */ }

Combined date and time.

Implementations

impl PrimitiveDateTime

pub const fn new(date: Date, time: Time) -> Self

Create a new PrimitiveDateTime from the provided Date and Time.

assert_eq!(
    PrimitiveDateTime::new(date!(2019-01-01), time!(0:00)),
    date!(2019-01-01).midnight(),
);

pub fn now() -> Self

👎 Deprecated since 0.2.7:

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

This is supported on crate feature std only.

Create a new PrimitiveDateTime with the current date and time (UTC).

assert!(PrimitiveDateTime::now().year() >= 2019);

pub const fn unix_epoch() -> Self

👎 Deprecated since 0.2.7:

This method assumes an offset of UTC.

Midnight, 1 January, 1970 (UTC).

assert_eq!(
    PrimitiveDateTime::unix_epoch(),
    date!(1970-01-01).midnight()
);

pub fn from_unix_timestamp(timestamp: i64) -> Self

👎 Deprecated since 0.2.7:

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

Create a PrimitiveDateTime from the provided Unix timestamp.

assert_eq!(
    PrimitiveDateTime::from_unix_timestamp(0),
    PrimitiveDateTime::unix_epoch()
);
assert_eq!(
    PrimitiveDateTime::from_unix_timestamp(1_546_300_800),
    date!(2019-01-01).midnight(),
);

pub fn timestamp(self) -> i64

👎 Deprecated since 0.2.7:

This method assumes an offset of UTC.

Get the Unix timestamp representing the PrimitiveDateTime.

assert_eq!(PrimitiveDateTime::unix_epoch().timestamp(), 0);
assert_eq!(date!(2019-01-01).midnight().timestamp(), 1_546_300_800);

pub const fn date(self) -> Date

Get the Date component of the PrimitiveDateTime.

assert_eq!(
    date!(2019-01-01).midnight().date(),
    date!(2019-01-01)
);

pub const fn time(self) -> Time

Get the Time component of the PrimitiveDateTime.

assert_eq!(date!(2019-01-01).midnight().time(), time!(0:00));

pub const fn year(self) -> i32

Get the year of the date.

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

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

pub const fn month(self) -> u8

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

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

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

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

pub const fn day(self) -> u8

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

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

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

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

pub const fn month_day(self) -> (u8, u8)

Get the month and day of the date. 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).midnight().month_day(), (1, 1));
assert_eq!(date!(2019-12-31).midnight().month_day(), (12, 31));

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

pub const fn ordinal(self) -> u16

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

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

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

Get the ISO 8601 year and week number.

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

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

pub const fn week(self) -> u8

Get the ISO week number.

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

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

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

pub const fn sunday_based_week(self) -> u8

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

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

pub const fn monday_based_week(self) -> u8

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

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

pub fn weekday(self) -> Weekday

Get the weekday.

This current uses Zeller’s congruence internally.

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

pub const fn hour(self) -> u8

Get the clock hour.

The returned value will always be in the range 0..24.

assert_eq!(date!(2019-01-01).midnight().hour(), 0);
assert_eq!(date!(2019-01-01).with_time(time!(23:59:59)).hour(), 23);

pub const fn minute(self) -> u8

Get the minute within the hour.

The returned value will always be in the range 0..60.

assert_eq!(date!(2019-01-01).midnight().minute(), 0);
assert_eq!(date!(2019-01-01).with_time(time!(23:59:59)).minute(), 59);

pub const fn second(self) -> u8

Get the second within the minute.

The returned value will always be in the range 0..60.

assert_eq!(date!(2019-01-01).midnight().second(), 0);
assert_eq!(date!(2019-01-01).with_time(time!(23:59:59)).second(), 59);

pub const fn millisecond(self) -> u16

Get the milliseconds within the second.

The returned value will always be in the range 0..1_000.

assert_eq!(date!(2019-01-01).midnight().millisecond(), 0);
assert_eq!(date!(2019-01-01).with_time(time!(23:59:59.999)).millisecond(), 999);

pub const fn microsecond(self) -> u32

Get the microseconds within the second.

The returned value will always be in the range 0..1_000_000.

assert_eq!(date!(2019-01-01).midnight().microsecond(), 0);
assert_eq!(date!(2019-01-01).with_time(time!(23:59:59.999_999)).microsecond(), 999_999);

pub const fn nanosecond(self) -> u32

Get the nanoseconds within the second.

The returned value will always be in the range 0..1_000_000_000.

assert_eq!(date!(2019-01-01).midnight().nanosecond(), 0);
assert_eq!(
    date!(2019-01-01).with_time(time!(23:59:59.999_999_999)).nanosecond(),
    999_999_999,
);

pub const fn using_offset(self, offset: UtcOffset) -> OffsetDateTime

👎 Deprecated since 0.2.7:

Due to behavior not clear by its name alone, it is preferred to use .assume_utc().to_offset(offset). This has the same behavior and can be used in const contexts.

Assuming that the existing PrimitiveDateTime represents a moment in the UTC, return an OffsetDateTime with the provided UtcOffset.

assert_eq!(
    date!(2019-01-01).midnight().using_offset(offset!(UTC)).unix_timestamp(),
    1_546_300_800,
);
assert_eq!(
    date!(2019-01-01).midnight().using_offset(offset!(-1)).unix_timestamp(),
    1_546_300_800,
);

This function is the same as calling .assume_utc().to_offset(offset).

pub fn assume_offset(self, offset: UtcOffset) -> OffsetDateTime

Assuming that the existing PrimitiveDateTime represents a moment in the provided UtcOffset, return an OffsetDateTime.

assert_eq!(
    date!(2019-01-01).midnight().assume_offset(offset!(UTC)).unix_timestamp(),
    1_546_300_800,
);
assert_eq!(
    date!(2019-01-01).midnight().assume_offset(offset!(-1)).unix_timestamp(),
    1_546_304_400,
);

pub const fn assume_utc(self) -> OffsetDateTime

Assuming that the existing PrimitiveDateTime represents a moment in the UTC, return an OffsetDateTime.

assert_eq!(
    date!(2019-01-01).midnight().assume_utc().unix_timestamp(),
    1_546_300_800,
);

This function is the same as calling .assume_offset(offset!(UTC)), except it is usable in const contexts.

impl PrimitiveDateTime

Methods that allow formatting the PrimitiveDateTime.

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

Format the PrimitiveDateTime using the provided string.

assert_eq!(
    date!(2019-01-02).midnight().format("%F %r"),
    "2019-01-02 12:00:00 am"
);

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

Format the PrimitiveDateTime using the provided string.

assert_eq!(
    date!(2019-01-02).midnight().lazy_format("%F %r").to_string(),
    "2019-01-02 12:00:00 am"
);

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

Attempt to parse a PrimitiveDateTime using the provided string.

assert_eq!(
    PrimitiveDateTime::parse("2019-01-02 00:00:00", "%F %T"),
    Ok(date!(2019-01-02).midnight()),
);
assert_eq!(
    PrimitiveDateTime::parse("2019-002 23:59:59", "%Y-%j %T"),
    Ok(date!(2019-002).with_time(time!(23:59:59)))
);
assert_eq!(
    PrimitiveDateTime::parse("2019-W01-3 12:00:00 pm", "%G-W%V-%u %r"),
    Ok(date!(2019-W01-3).with_time(time!(12:00))),
);

Trait Implementations

impl Add<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the + operator.

fn add(self, duration: Duration) -> Self::Output

Performs the + operation.

impl Add<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the + operator.

fn add(self, duration: StdDuration) -> Self::Output

Performs the + operation.

impl AddAssign<Duration> for PrimitiveDateTime

fn add_assign(&mut self, duration: Duration)

Performs the += operation.

impl AddAssign<Duration> for PrimitiveDateTime

fn add_assign(&mut self, duration: StdDuration)

Performs the += operation.

impl Clone for PrimitiveDateTime

fn clone(&self) -> PrimitiveDateTime

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PrimitiveDateTime

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

Formats the value using the given formatter.

impl<'a> Deserialize<'a> for PrimitiveDateTime

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'a>, 

Deserialize this value from the given Serde deserializer.

impl Display for PrimitiveDateTime

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

Formats the value using the given formatter.

impl From<SystemTime> for PrimitiveDateTime

Deprecated since v0.2.7, as it returns a value that assumes an offset of UTC.

fn from(system_time: SystemTime) -> Self

Performs the conversion.

impl Hash for PrimitiveDateTime

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, 

Feeds a slice of this type into the given Hasher.

impl Ord for PrimitiveDateTime

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

This method returns an Ordering between self and other.

#[must_use]

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

Compares and returns the maximum of two values.

#[must_use]

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

Compares and returns the minimum of two values.

#[must_use]

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

Restrict a value to a certain interval.

impl PartialEq<PrimitiveDateTime> for PrimitiveDateTime

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

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

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

This method tests for !=.

impl PartialEq<SystemTime> for PrimitiveDateTime

Deprecated since v0.2.7, as it assumes an offset of UTC.

fn eq(&self, rhs: &SystemTime) -> bool

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

#[must_use]

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

This method tests for !=.

impl PartialOrd<PrimitiveDateTime> for PrimitiveDateTime

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

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

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

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

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

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

impl PartialOrd<SystemTime> for PrimitiveDateTime

Deprecated since v0.2.7, as it assumes an offset of UTC.

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

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

#[must_use]

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

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

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

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

#[must_use]

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

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

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

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

impl Serialize for PrimitiveDateTime

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl Sub<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the - operator.

fn sub(self, duration: Duration) -> Self::Output

Performs the - operation.

impl Sub<Duration> for PrimitiveDateTime

type Output = Self

The resulting type after applying the - operator.

fn sub(self, duration: StdDuration) -> Self::Output

Performs the - operation.

impl Sub<PrimitiveDateTime> for PrimitiveDateTime

type Output = Duration

The resulting type after applying the - operator.

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

Performs the - operation.

impl Sub<SystemTime> for PrimitiveDateTime

Deprecated since v0.2.7, as it assumes an offset of UTC.

type Output = Duration

The resulting type after applying the - operator.

fn sub(self, rhs: SystemTime) -> Self::Output

Performs the - operation.

impl SubAssign<Duration> for PrimitiveDateTime

fn sub_assign(&mut self, duration: Duration)

Performs the -= operation.

impl SubAssign<Duration> for PrimitiveDateTime

fn sub_assign(&mut self, duration: StdDuration)

Performs the -= operation.

impl Copy for PrimitiveDateTime

impl Eq for PrimitiveDateTime

impl StructuralEq for PrimitiveDateTime

impl StructuralPartialEq for PrimitiveDateTime