Struct chrono::Duration

impl Duration

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.

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.

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.

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.

pub fn seconds(seconds: i64) -> Duration

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

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

Makes a new Duration with given number of milliseconds.

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

Makes a new Duration with given number of microseconds.

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

Makes a new Duration with given number of nanoseconds.

pub const fn num_weeks(&self) -> i64

Returns the total number of whole weeks in the duration.

pub const fn num_days(&self) -> i64

Returns the total number of whole days in the duration.

pub const fn num_hours(&self) -> i64

Returns the total number of whole hours in the duration.

pub const fn num_minutes(&self) -> i64

Returns the total number of whole minutes in the duration.

pub const fn num_seconds(&self) -> i64

Returns the total number of whole seconds in the duration.

pub const fn num_milliseconds(&self) -> i64

Returns the total number of whole milliseconds in the duration,

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).

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).

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

Add two durations, returning None if overflow occurred.

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

Subtract two durations, returning None if overflow occurred.

pub const fn abs(&self) -> Duration

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

pub const fn min_value() -> Duration

The minimum possible Duration: i64::MIN milliseconds.

pub const fn max_value() -> Duration

The maximum possible Duration: i64::MAX milliseconds.

pub const fn zero() -> Duration

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

pub const fn is_zero(&self) -> bool

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

pub fn from_std(duration: StdDuration) -> 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.

pub fn to_std(&self) -> Result<StdDuration, 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§

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

type Output = Date<Tz>

The resulting type after applying the + operator.

fn add(self, rhs: OldDuration) -> Date<Tz>

Performs the + operation. Read more

impl<Tz: TimeZone> Add<Duration> for DateTime<Tz>

type Output = DateTime<Tz>

The resulting type after applying the + operator.

fn add(self, rhs: OldDuration) -> DateTime<Tz>

Performs the + operation. Read more

impl Add<Duration> for NaiveDate

An addition of Duration to NaiveDate discards the fractional days, rounding to the closest integral number of days towards Duration::zero().

Panics on underflow or overflow. Use NaiveDate::checked_add_signed to detect that.

type Output = NaiveDate

The resulting type after applying the + operator.

fn add(self, rhs: OldDuration) -> NaiveDate

Performs the + operation. Read more

impl Add<Duration> for NaiveDateTime

An addition of Duration to NaiveDateTime yields another 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 on underflow or overflow. Use NaiveDateTime::checked_add_signed to detect that.

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());

type Output = NaiveDateTime

The resulting type after applying the + operator.

fn add(self, rhs: OldDuration) -> NaiveDateTime

Performs the + operation. Read more

impl Add<Duration> for NaiveTime

An addition of Duration to NaiveTime 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));

type Output = NaiveTime

The resulting type after applying the + operator.

fn add(self, rhs: OldDuration) -> NaiveTime

Performs the + operation. Read more

impl Add for Duration

type Output = Duration

The resulting type after applying the + operator.

fn add(self, rhs: Duration) -> Duration

Performs the + operation. Read more

impl<Tz: TimeZone> AddAssign<Duration> for Date<Tz>

fn add_assign(&mut self, rhs: OldDuration)

Performs the += operation. Read more

impl<Tz: TimeZone> AddAssign<Duration> for DateTime<Tz>

fn add_assign(&mut self, rhs: OldDuration)

Performs the += operation. Read more

impl AddAssign<Duration> for NaiveDate

fn add_assign(&mut self, rhs: OldDuration)

Performs the += operation. Read more

impl AddAssign<Duration> for NaiveDateTime

fn add_assign(&mut self, rhs: OldDuration)

Performs the += operation. Read more

impl AddAssign<Duration> for NaiveTime

fn add_assign(&mut self, rhs: OldDuration)

Performs the += operation. Read more

impl Clone for Duration

fn clone(&self) -> Duration

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

impl Debug for Duration

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

Formats the value using the given formatter. Read more

impl Display for Duration

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

Format a duration using the ISO 8601 format

impl Div<i32> for Duration

type Output = Duration

The resulting type after applying the / operator.

fn div(self, rhs: i32) -> Duration

Performs the / operation. Read more

impl Hash for Duration

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

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

impl Mul<i32> for Duration

type Output = Duration

The resulting type after applying the * operator.

fn mul(self, rhs: i32) -> Duration

Performs the * operation. Read more

impl Neg for Duration

type Output = Duration

The resulting type after applying the - operator.

fn neg(self) -> Duration

Performs the unary - operation. Read more

impl Ord for Duration

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

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

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

Compares and returns the maximum of two values. Read more

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

Compares and returns the minimum of two values. Read more

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

Restrict a value to a certain interval. Read more

impl PartialEq for Duration

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

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

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

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

impl PartialOrd for Duration

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

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

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

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

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

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

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

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

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

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

impl<Tz: TimeZone> Sub<Duration> for Date<Tz>

type Output = Date<Tz>

The resulting type after applying the - operator.

fn sub(self, rhs: OldDuration) -> Date<Tz>

Performs the - operation. Read more

impl<Tz: TimeZone> Sub<Duration> for DateTime<Tz>

type Output = DateTime<Tz>

The resulting type after applying the - operator.

fn sub(self, rhs: OldDuration) -> DateTime<Tz>

Performs the - operation. Read more

impl Sub<Duration> for NaiveDate

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

Panics on underflow or overflow. Use NaiveDate::checked_sub_signed to detect that.

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));

type Output = NaiveDate

The resulting type after applying the - operator.

fn sub(self, rhs: OldDuration) -> NaiveDate

Performs the - operation. Read more

impl Sub<Duration> for NaiveDateTime

A subtraction of Duration from NaiveDateTime yields another NaiveDateTime. It 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 on underflow or overflow. Use NaiveDateTime::checked_sub_signed to detect that.

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());

type Output = NaiveDateTime

The resulting type after applying the - operator.

fn sub(self, rhs: OldDuration) -> NaiveDateTime

Performs the - operation. Read more