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FullRetainedReason

Enum FullRetainedReason 

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pub enum FullRetainedReason {
    NotByteReversible,
    NotSmaller {
        full_bytes: usize,
        delta_bytes: usize,
    },
    NotSerializable,
}
Expand description

Why an eligible frame was persisted in full rather than as a delta.

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NotByteReversible

Applying the delta back to the base did not reproduce the frame byte for byte. The encoder refuses to persist a delta it cannot prove reversible, whatever the saving would have been.

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NotSmaller

The delta document is not smaller than the frame it would replace, so compacting it would cost bytes rather than save them.

Fields

§full_bytes: usize

Serialized bytes of the frame.

§delta_bytes: usize

Serialized bytes the delta document would have cost.

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NotSerializable

The frame or its base could not be serialized, so neither the digest nor the reversibility check could be performed.

Trait Implementations§

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impl Clone for FullRetainedReason

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fn clone(&self) -> FullRetainedReason

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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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 Eq for FullRetainedReason

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impl PartialEq for FullRetainedReason

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for FullRetainedReason

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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<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> 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, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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.