Struct uuid::timestamp::Timestamp

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

A timestamp that can be encoded into a UUID.

This type abstracts the specific encoding, so versions 1, 6, and 7 UUIDs can both be supported through the same type, even though they have a different representation of a timestamp.

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impl Timestamp

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pub fn now(context: impl ClockSequence<Output = u16>) -> Self

Get a timestamp representing the current system time.

This method defers to the standard library’s SystemTime type.

Panics

This method will panic if calculating the elapsed time since the Unix epoch fails.

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pub const fn from_rfc4122(ticks: u64, counter: u16) -> Self

Construct a Timestamp from an RFC4122 timestamp and counter, as used in versions 1 and 6 UUIDs.

Overflow

If conversion from RFC4122 ticks to the internal timestamp format would overflow it will wrap.

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pub fn from_unix( context: impl ClockSequence<Output = u16>, seconds: u64, nanos: u32 ) -> Self

Construct a Timestamp from a Unix timestamp, as used in version 7 UUIDs.

Overflow

If conversion from RFC4122 ticks to the internal timestamp format would overflow it will wrap.

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pub const fn to_unix(&self) -> (u64, u32)

Get the value of the timestamp as a Unix timestamp, as used in version 7 UUIDs.

Overflow

If conversion from RFC4122 ticks to the internal timestamp format would overflow it will wrap.

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pub const fn to_unix_nanos(&self) -> u32

👎Deprecated: use to_unix instead; this method will be removed in a future release

Get the number of fractional nanoseconds in the Unix timestamp.

This method is deprecated and probably doesn’t do what you’re expecting it to. It doesn’t return the timestamp as nanoseconds since the Unix epoch, it returns the fractional seconds of the timestamp.

Trait Implementations§

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impl Clone for Timestamp

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fn clone(&self) -> Timestamp

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 Timestamp

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

Formats the value using the given formatter. Read more
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impl Hash for Timestamp

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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
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impl PartialEq for Timestamp

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fn eq(&self, other: &Timestamp) -> 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 Copy for Timestamp

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impl Eq for Timestamp

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impl StructuralEq for Timestamp

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impl StructuralPartialEq for Timestamp

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> 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, 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.