pub struct NoContext;
Expand description

An empty counter that will always return the value 0.

This type can be used when constructing version 7 UUIDs. When used to construct a version 7 UUID, the entire counter segment of the UUID will be filled with a random value. This type does not maintain ordering of UUIDs within a millisecond but is efficient.

This type should not be used when constructing version 1 or version 6 UUIDs. When used to construct a version 1 or version 6 UUID, the counter segment will remain zero.

Trait Implementations§

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impl ClockSequence for NoContext

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type Output = u16

The type of sequence returned by this counter.
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fn generate_sequence(&self, _seconds: u64, _nanos: u32) -> Self::Output

Get the next value in the sequence to feed into a timestamp. Read more
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fn usable_bits(&self) -> usize

The number of usable bits from the least significant bit in the result of ClockSequence::generate_sequence or ClockSequence::generate_timestamp_sequence. Read more
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fn generate_timestamp_sequence( &self, seconds: u64, subsec_nanos: u32 ) -> (Self::Output, u64, u32)

Get the next value in the sequence, potentially also adjusting the timestamp. Read more
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impl Clone for NoContext

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fn clone(&self) -> NoContext

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 NoContext

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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 Default for NoContext

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fn default() -> NoContext

Returns the “default value” for a type. Read more
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impl Copy for NoContext

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.