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Duration

serde_with::chrono

Struct Duration 

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pub struct Duration { /* private fields */ }
Available on crate feature chrono only.
Expand description

ISO 8601 time duration with nanosecond precision.

This also allows for the negative duration; see individual methods for details.

Implementations§

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impl Duration

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pub fn weeks(weeks: i64) -> Duration

Makes a new Duration with given number of weeks. Equivalent to Duration::seconds(weeks * 7 * 24 * 60 * 60) with overflow checks. Panics when the duration is out of bounds.

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pub fn try_weeks(weeks: i64) -> Option<Duration>

Makes a new Duration with given number of weeks. Equivalent to Duration::seconds(weeks * 7 * 24 * 60 * 60) with overflow checks. Returns None when the duration is out of bounds.

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pub fn days(days: i64) -> Duration

Makes a new Duration with given number of days. Equivalent to Duration::seconds(days * 24 * 60 * 60) with overflow checks. Panics when the duration is out of bounds.

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pub fn try_days(days: i64) -> Option<Duration>

Makes a new Duration with given number of days. Equivalent to Duration::seconds(days * 24 * 60 * 60) with overflow checks. Returns None when the duration is out of bounds.

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pub fn hours(hours: i64) -> Duration

Makes a new Duration with given number of hours. Equivalent to Duration::seconds(hours * 60 * 60) with overflow checks. Panics when the duration is out of bounds.

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pub fn try_hours(hours: i64) -> Option<Duration>

Makes a new Duration with given number of hours. Equivalent to Duration::seconds(hours * 60 * 60) with overflow checks. Returns None when the duration is out of bounds.

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pub fn minutes(minutes: i64) -> Duration

Makes a new Duration with given number of minutes. Equivalent to Duration::seconds(minutes * 60) with overflow checks. Panics when the duration is out of bounds.

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pub fn try_minutes(minutes: i64) -> Option<Duration>

Makes a new Duration with given number of minutes. Equivalent to Duration::seconds(minutes * 60) with overflow checks. Returns None when the duration is out of bounds.

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pub fn seconds(seconds: i64) -> Duration

Makes a new Duration with given number of seconds. Panics when the duration is more than i64::MAX milliseconds or less than -i64::MAX milliseconds.

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pub fn try_seconds(seconds: i64) -> Option<Duration>

Makes a new Duration with given number of seconds. Returns None when the duration is more than i64::MAX milliseconds or less than -i64::MAX milliseconds.

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pub const fn milliseconds(milliseconds: i64) -> Duration

Makes a new Duration with given number of milliseconds.

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pub const fn microseconds(microseconds: i64) -> Duration

Makes a new Duration with given number of microseconds.

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pub const fn nanoseconds(nanos: i64) -> Duration

Makes a new Duration with given number of nanoseconds.

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pub const fn num_weeks(&self) -> i64

Returns the total number of whole weeks in the duration.

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pub const fn num_days(&self) -> i64

Returns the total number of whole days in the duration.

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pub const fn num_hours(&self) -> i64

Returns the total number of whole hours in the duration.

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pub const fn num_minutes(&self) -> i64

Returns the total number of whole minutes in the duration.

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pub const fn num_seconds(&self) -> i64

Returns the total number of whole seconds in the duration.

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pub const fn subsec_nanos(&self) -> i32

Returns the number of nanoseconds such that subsec_nanos() + num_seconds() * NANOS_PER_SEC is the total number of nanoseconds in the duration.

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pub const fn num_milliseconds(&self) -> i64

Returns the total number of whole milliseconds in the duration,

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pub const fn num_microseconds(&self) -> Option<i64>

Returns the total number of whole microseconds in the duration, or None on overflow (exceeding 2^63 microseconds in either direction).

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pub const fn num_nanoseconds(&self) -> Option<i64>

Returns the total number of whole nanoseconds in the duration, or None on overflow (exceeding 2^63 nanoseconds in either direction).

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pub fn checked_add(&self, rhs: &Duration) -> Option<Duration>

Add two durations, returning None if overflow occurred.

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pub fn checked_sub(&self, rhs: &Duration) -> Option<Duration>

Subtract two durations, returning None if overflow occurred.

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pub const fn abs(&self) -> Duration

Returns the duration as an absolute (non-negative) value.

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pub const fn min_value() -> Duration

The minimum possible Duration: -i64::MAX milliseconds.

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pub const fn max_value() -> Duration

The maximum possible Duration: i64::MAX milliseconds.

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pub const fn zero() -> Duration

A duration where the stored seconds and nanoseconds are equal to zero.

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pub const fn is_zero(&self) -> bool

Returns true if the duration equals Duration::zero().

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pub fn from_std(duration: Duration) -> Result<Duration, OutOfRangeError>

Creates a time::Duration object from std::time::Duration

This function errors when original duration is larger than the maximum value supported for this type.

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pub fn to_std(&self) -> Result<Duration, OutOfRangeError>

Creates a std::time::Duration object from time::Duration

This function errors when duration is less than zero. As standard library implementation is limited to non-negative values.

Trait Implementations§

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impl<Tz> Add<Duration> for Date<Tz>
where Tz: TimeZone,

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type Output = Date<Tz>

The resulting type after applying the + operator.
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fn add(self, rhs: Duration) -> Date<Tz>

Performs the + operation. Read more
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impl<Tz> Add<Duration> for DateTime<Tz>
where Tz: TimeZone,

Add chrono::Duration to DateTime.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using DateTime<Tz>::checked_add_signed to get an Option instead.

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type Output = DateTime<Tz>

The resulting type after applying the + operator.
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fn add(self, rhs: Duration) -> DateTime<Tz>

Performs the + operation. Read more
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impl Add<Duration> for NaiveDate

Add chrono::Duration to NaiveDate.

This discards the fractional days in Duration, rounding to the closest integral number of days towards Duration::zero().

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDate::checked_add_signed to get an Option instead.

§Example

use chrono::{Duration, NaiveDate};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

assert_eq!(from_ymd(2014, 1, 1) + Duration::zero(),             from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(86399),     from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) + Duration::seconds(-86399),    from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) + Duration::days(1),            from_ymd(2014, 1, 2));
assert_eq!(from_ymd(2014, 1, 1) + Duration::days(-1),           from_ymd(2013, 12, 31));
assert_eq!(from_ymd(2014, 1, 1) + Duration::days(364),          from_ymd(2014, 12, 31));
assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*4 + 1),    from_ymd(2018, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) + Duration::days(365*400 + 97), from_ymd(2414, 1, 1));
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type Output = NaiveDate

The resulting type after applying the + operator.
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fn add(self, rhs: Duration) -> NaiveDate

Performs the + operation. Read more
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impl Add<Duration> for NaiveDateTime

Add chrono::Duration to NaiveDateTime.

As a part of Chrono’s leap second handling, the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDateTime::checked_add_signed to get an Option instead.

§Example

use chrono::{Duration, NaiveDate};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

let d = from_ymd(2016, 7, 8);
let hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap();
assert_eq!(hms(3, 5, 7) + Duration::zero(),             hms(3, 5, 7));
assert_eq!(hms(3, 5, 7) + Duration::seconds(1),         hms(3, 5, 8));
assert_eq!(hms(3, 5, 7) + Duration::seconds(-1),        hms(3, 5, 6));
assert_eq!(hms(3, 5, 7) + Duration::seconds(3600 + 60), hms(4, 6, 7));
assert_eq!(hms(3, 5, 7) + Duration::seconds(86_400),
           from_ymd(2016, 7, 9).and_hms_opt(3, 5, 7).unwrap());
assert_eq!(hms(3, 5, 7) + Duration::days(365),
           from_ymd(2017, 7, 8).and_hms_opt(3, 5, 7).unwrap());

let hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap();
assert_eq!(hmsm(3, 5, 7, 980) + Duration::milliseconds(450), hmsm(3, 5, 8, 430));

Leap seconds are handled, but the addition assumes that it is the only leap second happened.

let leap = hmsm(3, 5, 59, 1_300);
assert_eq!(leap + Duration::zero(),             hmsm(3, 5, 59, 1_300));
assert_eq!(leap + Duration::milliseconds(-500), hmsm(3, 5, 59, 800));
assert_eq!(leap + Duration::milliseconds(500),  hmsm(3, 5, 59, 1_800));
assert_eq!(leap + Duration::milliseconds(800),  hmsm(3, 6, 0, 100));
assert_eq!(leap + Duration::seconds(10),        hmsm(3, 6, 9, 300));
assert_eq!(leap + Duration::seconds(-10),       hmsm(3, 5, 50, 300));
assert_eq!(leap + Duration::days(1),
           from_ymd(2016, 7, 9).and_hms_milli_opt(3, 5, 59, 300).unwrap());
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type Output = NaiveDateTime

The resulting type after applying the + operator.
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fn add(self, rhs: Duration) -> NaiveDateTime

Performs the + operation. Read more
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impl Add<Duration> for NaiveTime

Add chrono::Duration to NaiveTime.

This wraps around and never overflows or underflows. In particular the addition ignores integral number of days.

As a part of Chrono’s leap second handling, the addition assumes that there is no leap second ever, except when the NaiveTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Example

use chrono::{Duration, NaiveTime};

let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };

assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::zero(),                  from_hmsm(3, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(1),              from_hmsm(3, 5, 8, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(-1),             from_hmsm(3, 5, 6, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(60 + 4),         from_hmsm(3, 6, 11, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(7*60*60 - 6*60), from_hmsm(9, 59, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::milliseconds(80),        from_hmsm(3, 5, 7, 80));
assert_eq!(from_hmsm(3, 5, 7, 950) + Duration::milliseconds(280),     from_hmsm(3, 5, 8, 230));
assert_eq!(from_hmsm(3, 5, 7, 950) + Duration::milliseconds(-980),    from_hmsm(3, 5, 6, 970));

The addition wraps around.

assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(22*60*60), from_hmsm(1, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::seconds(-8*60*60), from_hmsm(19, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) + Duration::days(800),         from_hmsm(3, 5, 7, 0));

Leap seconds are handled, but the addition assumes that it is the only leap second happened.

let leap = from_hmsm(3, 5, 59, 1_300);
assert_eq!(leap + Duration::zero(),             from_hmsm(3, 5, 59, 1_300));
assert_eq!(leap + Duration::milliseconds(-500), from_hmsm(3, 5, 59, 800));
assert_eq!(leap + Duration::milliseconds(500),  from_hmsm(3, 5, 59, 1_800));
assert_eq!(leap + Duration::milliseconds(800),  from_hmsm(3, 6, 0, 100));
assert_eq!(leap + Duration::seconds(10),        from_hmsm(3, 6, 9, 300));
assert_eq!(leap + Duration::seconds(-10),       from_hmsm(3, 5, 50, 300));
assert_eq!(leap + Duration::days(1),            from_hmsm(3, 5, 59, 300));
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type Output = NaiveTime

The resulting type after applying the + operator.
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fn add(self, rhs: Duration) -> NaiveTime

Performs the + operation. Read more
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impl Add for Duration

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type Output = Duration

The resulting type after applying the + operator.
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fn add(self, rhs: Duration) -> Duration

Performs the + operation. Read more
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impl<Tz> AddAssign<Duration> for Date<Tz>
where Tz: TimeZone,

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fn add_assign(&mut self, rhs: Duration)

Performs the += operation. Read more
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impl<Tz> AddAssign<Duration> for DateTime<Tz>
where Tz: TimeZone,

Add-assign chrono::Duration to DateTime.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using DateTime<Tz>::checked_add_signed to get an Option instead.

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fn add_assign(&mut self, rhs: Duration)

Performs the += operation. Read more
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impl AddAssign<Duration> for NaiveDate

Add-assign of chrono::Duration to NaiveDate.

This discards the fractional days in Duration, rounding to the closest integral number of days towards Duration::zero().

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDate::checked_add_signed to get an Option instead.

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fn add_assign(&mut self, rhs: Duration)

Performs the += operation. Read more
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impl AddAssign<Duration> for NaiveDateTime

Add-assign chrono::Duration to NaiveDateTime.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDateTime::checked_add_signed to get an Option instead.

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fn add_assign(&mut self, rhs: Duration)

Performs the += operation. Read more
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impl AddAssign<Duration> for NaiveTime

Add-assign chrono::Duration to NaiveTime.

This wraps around and never overflows or underflows. In particular the addition ignores integral number of days.

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fn add_assign(&mut self, rhs: Duration)

Performs the += operation. Read more
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impl AddAssign for Duration

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fn add_assign(&mut self, rhs: Duration)

Performs the += operation. Read more
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impl Clone for Duration

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fn clone(&self) -> Duration

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Duration

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

Formats the value using the given formatter. Read more
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impl Default for Duration

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fn default() -> Duration

Returns the “default value” for a type. Read more
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationMicroSeconds<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMicroSeconds<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMicroSeconds<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMicroSeconds<i64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMicroSecondsWithFrac<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationMicroSecondsWithFrac<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMicroSecondsWithFrac<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationMilliSeconds<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMilliSeconds<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMilliSeconds<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMilliSeconds<i64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMilliSecondsWithFrac<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationMilliSecondsWithFrac<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationMilliSecondsWithFrac<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationNanoSeconds<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationNanoSeconds<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationNanoSeconds<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationNanoSeconds<i64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationNanoSecondsWithFrac<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationNanoSecondsWithFrac<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationNanoSecondsWithFrac<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationSeconds<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationSeconds<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationSeconds<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationSeconds<i64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationSecondsWithFrac<f64, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de, FORMAT> DeserializeAs<'de, Duration> for DurationSecondsWithFrac<FORMAT, Flexible>
where FORMAT: Format,

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl<'de> DeserializeAs<'de, Duration> for DurationSecondsWithFrac<String, Strict>

Available on crate feature chrono_0_4 only.
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fn deserialize_as<D>(deserializer: D) -> Result<Duration, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.
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impl Display for Duration

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

Format a duration using the ISO 8601 format

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impl Div<i32> for Duration

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type Output = Duration

The resulting type after applying the / operator.
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fn div(self, rhs: i32) -> Duration

Performs the / operation. Read more
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impl Hash for Duration

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Mul<i32> for Duration

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type Output = Duration

The resulting type after applying the * operator.
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fn mul(self, rhs: i32) -> Duration

Performs the * operation. Read more
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impl Neg for Duration

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type Output = Duration

The resulting type after applying the - operator.
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fn neg(self) -> Duration

Performs the unary - operation. Read more
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impl Ord for Duration

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

This method returns an Ordering between self and other. Read more
1.21.0 · Source§

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

Compares and returns the maximum of two values. Read more
1.21.0 · Source§

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

Compares and returns the minimum of two values. Read more
1.50.0 · Source§

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

Restrict a value to a certain interval. Read more
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impl PartialEq for Duration

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

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

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

This method returns an ordering between self and other values if one exists. Read more
1.0.0 · Source§

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

Tests less than (for self and other) and is used by the < operator. Read more
1.0.0 · Source§

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

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
1.0.0 · Source§

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

Tests greater than (for self and other) and is used by the > operator. Read more
1.0.0 · Source§

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

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<STRICTNESS> SerializeAs<Duration> for DurationMicroSeconds<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMicroSeconds<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMicroSeconds<i64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMicroSecondsWithFrac<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMicroSecondsWithFrac<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMilliSeconds<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMilliSeconds<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMilliSeconds<i64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMilliSecondsWithFrac<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationMilliSecondsWithFrac<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationNanoSeconds<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationNanoSeconds<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationNanoSeconds<i64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationNanoSecondsWithFrac<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationNanoSecondsWithFrac<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationSeconds<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationSeconds<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationSeconds<i64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationSecondsWithFrac<String, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<STRICTNESS> SerializeAs<Duration> for DurationSecondsWithFrac<f64, STRICTNESS>
where STRICTNESS: Strictness,

Available on crate feature chrono_0_4 only.
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fn serialize_as<S>(source: &Duration, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer.
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impl<Tz> Sub<Duration> for Date<Tz>
where Tz: TimeZone,

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type Output = Date<Tz>

The resulting type after applying the - operator.
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fn sub(self, rhs: Duration) -> Date<Tz>

Performs the - operation. Read more
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impl<Tz> Sub<Duration> for DateTime<Tz>
where Tz: TimeZone,

Subtract chrono::Duration from DateTime.

This is the same as the addition with a negated Duration.

As a part of Chrono’s [leap second handling] the subtraction assumes that there is no leap second ever, except when the DateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using DateTime<Tz>::checked_sub_signed to get an Option instead.

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type Output = DateTime<Tz>

The resulting type after applying the - operator.
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fn sub(self, rhs: Duration) -> DateTime<Tz>

Performs the - operation. Read more
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impl Sub<Duration> for NaiveDate

Subtract chrono::Duration from NaiveDate.

This discards the fractional days in Duration, rounding to the closest integral number of days towards Duration::zero(). It is the same as the addition with a negated Duration.

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDate::checked_sub_signed to get an Option instead.

§Example

use chrono::{Duration, NaiveDate};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

assert_eq!(from_ymd(2014, 1, 1) - Duration::zero(),             from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(86399),     from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::seconds(-86399),    from_ymd(2014, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(1),            from_ymd(2013, 12, 31));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(-1),           from_ymd(2014, 1, 2));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(364),          from_ymd(2013, 1, 2));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*4 + 1),    from_ymd(2010, 1, 1));
assert_eq!(from_ymd(2014, 1, 1) - Duration::days(365*400 + 97), from_ymd(1614, 1, 1));
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type Output = NaiveDate

The resulting type after applying the - operator.
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fn sub(self, rhs: Duration) -> NaiveDate

Performs the - operation. Read more
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impl Sub<Duration> for NaiveDateTime

Subtract chrono::Duration from NaiveDateTime.

This is the same as the addition with a negated Duration.

As a part of Chrono’s leap second handling the subtraction assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDateTime::checked_sub_signed to get an Option instead.

§Example

use chrono::{Duration, NaiveDate};

let from_ymd = |y, m, d| NaiveDate::from_ymd_opt(y, m, d).unwrap();

let d = from_ymd(2016, 7, 8);
let hms = |h, m, s| d.and_hms_opt(h, m, s).unwrap();
assert_eq!(hms(3, 5, 7) - Duration::zero(),             hms(3, 5, 7));
assert_eq!(hms(3, 5, 7) - Duration::seconds(1),         hms(3, 5, 6));
assert_eq!(hms(3, 5, 7) - Duration::seconds(-1),        hms(3, 5, 8));
assert_eq!(hms(3, 5, 7) - Duration::seconds(3600 + 60), hms(2, 4, 7));
assert_eq!(hms(3, 5, 7) - Duration::seconds(86_400),
           from_ymd(2016, 7, 7).and_hms_opt(3, 5, 7).unwrap());
assert_eq!(hms(3, 5, 7) - Duration::days(365),
           from_ymd(2015, 7, 9).and_hms_opt(3, 5, 7).unwrap());

let hmsm = |h, m, s, milli| d.and_hms_milli_opt(h, m, s, milli).unwrap();
assert_eq!(hmsm(3, 5, 7, 450) - Duration::milliseconds(670), hmsm(3, 5, 6, 780));

Leap seconds are handled, but the subtraction assumes that it is the only leap second happened.

let leap = hmsm(3, 5, 59, 1_300);
assert_eq!(leap - Duration::zero(),            hmsm(3, 5, 59, 1_300));
assert_eq!(leap - Duration::milliseconds(200), hmsm(3, 5, 59, 1_100));
assert_eq!(leap - Duration::milliseconds(500), hmsm(3, 5, 59, 800));
assert_eq!(leap - Duration::seconds(60),       hmsm(3, 5, 0, 300));
assert_eq!(leap - Duration::days(1),
           from_ymd(2016, 7, 7).and_hms_milli_opt(3, 6, 0, 300).unwrap());
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type Output = NaiveDateTime

The resulting type after applying the - operator.
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fn sub(self, rhs: Duration) -> NaiveDateTime

Performs the - operation. Read more
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impl Sub<Duration> for NaiveTime

Subtract chrono::Duration from NaiveTime.

This wraps around and never overflows or underflows. In particular the subtraction ignores integral number of days. This is the same as addition with a negated Duration.

As a part of Chrono’s leap second handling, the subtraction assumes that there is no leap second ever, except when the NaiveTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Example

use chrono::{Duration, NaiveTime};

let from_hmsm = |h, m, s, milli| { NaiveTime::from_hms_milli_opt(h, m, s, milli).unwrap() };

assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::zero(),                  from_hmsm(3, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(1),              from_hmsm(3, 5, 6, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(60 + 5),         from_hmsm(3, 4, 2, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(2*60*60 + 6*60), from_hmsm(0, 59, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::milliseconds(80),        from_hmsm(3, 5, 6, 920));
assert_eq!(from_hmsm(3, 5, 7, 950) - Duration::milliseconds(280),     from_hmsm(3, 5, 7, 670));

The subtraction wraps around.

assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::seconds(8*60*60), from_hmsm(19, 5, 7, 0));
assert_eq!(from_hmsm(3, 5, 7, 0) - Duration::days(800),        from_hmsm(3, 5, 7, 0));

Leap seconds are handled, but the subtraction assumes that it is the only leap second happened.

let leap = from_hmsm(3, 5, 59, 1_300);
assert_eq!(leap - Duration::zero(),            from_hmsm(3, 5, 59, 1_300));
assert_eq!(leap - Duration::milliseconds(200), from_hmsm(3, 5, 59, 1_100));
assert_eq!(leap - Duration::milliseconds(500), from_hmsm(3, 5, 59, 800));
assert_eq!(leap - Duration::seconds(60),       from_hmsm(3, 5, 0, 300));
assert_eq!(leap - Duration::days(1),           from_hmsm(3, 6, 0, 300));
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type Output = NaiveTime

The resulting type after applying the - operator.
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fn sub(self, rhs: Duration) -> NaiveTime

Performs the - operation. Read more
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impl Sub for Duration

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type Output = Duration

The resulting type after applying the - operator.
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fn sub(self, rhs: Duration) -> Duration

Performs the - operation. Read more
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impl<Tz> SubAssign<Duration> for Date<Tz>
where Tz: TimeZone,

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fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation. Read more
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impl<Tz> SubAssign<Duration> for DateTime<Tz>
where Tz: TimeZone,

Subtract-assign chrono::Duration from DateTime.

This is the same as the addition with a negated Duration.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the DateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using DateTime<Tz>::checked_sub_signed to get an Option instead.

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fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation. Read more
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impl SubAssign<Duration> for NaiveDate

Subtract-assign chrono::Duration from NaiveDate.

This discards the fractional days in Duration, rounding to the closest integral number of days towards Duration::zero(). It is the same as the addition with a negated Duration.

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDate::checked_sub_signed to get an Option instead.

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fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation. Read more
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impl SubAssign<Duration> for NaiveDateTime

Subtract-assign chrono::Duration from NaiveDateTime.

This is the same as the addition with a negated Duration.

As a part of Chrono’s [leap second handling], the addition assumes that there is no leap second ever, except when the NaiveDateTime itself represents a leap second in which case the assumption becomes that there is exactly a single leap second ever.

§Panics

Panics if the resulting date would be out of range. Consider using NaiveDateTime::checked_sub_signed to get an Option instead.

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fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation. Read more
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impl SubAssign<Duration> for NaiveTime

Subtract-assign chrono::Duration from NaiveTime.

This wraps around and never overflows or underflows. In particular the subtraction ignores integral number of days.

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fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation. Read more
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impl SubAssign for Duration

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fn sub_assign(&mut self, rhs: Duration)

Performs the -= operation. Read more
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impl<'a> Sum<&'a Duration> for Duration

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fn sum<I>(iter: I) -> Duration
where I: Iterator<Item = &'a Duration>,

Takes an iterator and generates Self from the elements by “summing up” the items.
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impl Sum for Duration

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fn sum<I>(iter: I) -> Duration
where I: Iterator<Item = Duration>,

Takes an iterator and generates Self from the elements by “summing up” the items.
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impl Copy for Duration

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impl Eq for Duration

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impl StructuralPartialEq for Duration

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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impl<T> DynClone for T
where T: Clone,

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fn __clone_box(&self, _: Private) -> *mut ()

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.