pub struct DateTime { /* private fields */ }
Expand description

DateTime in time.

DateTime in time represented as seconds and sub-second nanos since the Unix epoch (January 1, 1970 at midnight UTC/GMT).

This type can be converted to/from the standard library’s SystemTime:

use std::convert::TryFrom;

let the_millennium_as_system_time = SystemTime::try_from(DateTime::from_secs(946_713_600))?;
let now_as_date_time = DateTime::from(SystemTime::now());

The aws-smithy-types-convert crate can be used for conversions to/from other libraries, such as time or chrono.

Implementations§

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impl DateTime

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pub fn from_secs(epoch_seconds: i64) -> DateTime

Creates a DateTime from a number of seconds since the Unix epoch.

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pub fn from_millis(epoch_millis: i64) -> DateTime

Creates a DateTime from a number of milliseconds since the Unix epoch.

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pub fn from_nanos(epoch_nanos: i128) -> Result<DateTime, ConversionError>

Creates a DateTime from a number of nanoseconds since the Unix epoch.

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pub fn as_nanos(&self) -> i128

Returns the number of nanoseconds since the Unix epoch that this DateTime represents.

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pub fn from_fractional_secs(epoch_seconds: i64, fraction: f64) -> DateTime

Creates a DateTime from a number of seconds and a fractional second since the Unix epoch.

§Example
assert_eq!(
    DateTime::from_secs_and_nanos(1, 500_000_000u32),
    DateTime::from_fractional_secs(1, 0.5),
);
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pub fn from_secs_and_nanos(seconds: i64, subsecond_nanos: u32) -> DateTime

Creates a DateTime from a number of seconds and sub-second nanos since the Unix epoch.

§Example
assert_eq!(
    DateTime::from_fractional_secs(1, 0.5),
    DateTime::from_secs_and_nanos(1, 500_000_000u32),
);
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pub fn as_secs_f64(&self) -> f64

Returns the DateTime value as an f64 representing the seconds since the Unix epoch.

Note: This conversion will lose precision due to the nature of floating point numbers.

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pub fn from_secs_f64(epoch_seconds: f64) -> DateTime

Creates a DateTime from an f64 representing the number of seconds since the Unix epoch.

§Example
assert_eq!(
    DateTime::from_fractional_secs(1, 0.5),
    DateTime::from_secs_f64(1.5),
);
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pub fn from_str(s: &str, format: Format) -> Result<DateTime, DateTimeParseError>

Parses a DateTime from a string using the given format.

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pub fn has_subsec_nanos(&self) -> bool

Returns true if sub-second nanos is greater than zero.

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pub fn secs(&self) -> i64

Returns the epoch seconds component of the DateTime.

Note: this does not include the sub-second nanos.

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pub fn set_seconds(&mut self, seconds: i64) -> &mut DateTime

Set the seconds component of this DateTime.

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pub fn subsec_nanos(&self) -> u32

Returns the sub-second nanos component of the DateTime.

Note: this does not include the number of seconds since the epoch.

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pub fn set_subsec_nanos(&mut self, subsec_nanos: u32) -> &mut DateTime

Set the “sub-second” nanoseconds of this DateTime.

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pub fn to_millis(self) -> Result<i64, ConversionError>

Converts the DateTime to the number of milliseconds since the Unix epoch.

This is fallible since DateTime holds more precision than an i64, and will return a ConversionError for DateTime values that can’t be converted.

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pub fn read( s: &str, format: Format, delim: char ) -> Result<(DateTime, &str), DateTimeParseError>

Read 1 date of format from s, expecting either delim or EOF

Enable parsing multiple dates from the same string

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pub fn fmt(&self, format: Format) -> Result<String, DateTimeFormatError>

Formats the DateTime to a string using the given format.

Returns an error if the given DateTime cannot be represented by the desired format.

Trait Implementations§

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impl Clone for DateTime

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fn clone(&self) -> DateTime

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
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impl Debug for DateTime

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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 Display for DateTime

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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 From<SystemTime> for DateTime

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fn from(time: SystemTime) -> DateTime

Converts to this type from the input type.
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impl Hash for DateTime

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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 Ord for DateTime

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fn cmp(&self, other: &DateTime) -> 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
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impl PartialEq for DateTime

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fn eq(&self, other: &DateTime) -> 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.
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impl PartialOrd for DateTime

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fn partial_cmp(&self, other: &DateTime) -> 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
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impl Copy for DateTime

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impl Eq for DateTime

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impl StructuralPartialEq for DateTime

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> AsOut<T> for T
where T: Copy,

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fn as_out(&mut self) -> Out<'_, T>

Returns an out reference to self.
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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<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<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<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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<Unshared, Shared> IntoShared<Shared> for Unshared
where Shared: FromUnshared<Unshared>,

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fn into_shared(self) -> Shared

Creates a shared type from an unshared type.
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impl<T> Same for T

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type Output = T

Should always be Self
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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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default 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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more