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DescriptionBound

Struct DescriptionBound 

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pub struct DescriptionBound {
    pub object_hash: u64,
    pub bytes: usize,
    pub descriptor: Descriptor,
}
Expand description

A computable upper bound K̄(x) on the Kolmogorov complexity of an object x, over the fixed description language, carrying a re-checkable decode witness.

bytes is the program length (the bound). object_hash is a stable content hash of x. DescriptionBound::verify decodes the descriptor and confirms it reproduces x — an upper bound is only trustworthy because decode(program) = x.

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§object_hash: u64

A stable content hash of the described object (order- and value-sensitive).

§bytes: usize

The description length in bytes — the certified upper bound K̄(x).

§descriptor: Descriptor

The program (in the description language) that reproduces the object.

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impl DescriptionBound

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pub fn of_int_seq(v: &[i64]) -> DescriptionBound

Describe an integer sequence by its shortest generator-menu encoding (Layer 1). The result’s bytes is never larger than the plain-varint length of the sequence.

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pub fn of_boolean(truth: &[bool]) -> Option<DescriptionBound>

Describe a Boolean function by its recursive symmetry decomposition (Layer 3), the same certified upper bound as kolmogorov_bound but inside the unified DescriptionBound framework. bytes is the tree’s total description size rounded up to bytes. None if truth.len() is not a power of two.

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pub fn verify(&self) -> bool

Re-check the decode witness: decode the descriptor and confirm it reproduces the object whose hash we recorded. This is the whole point of an upper bound — it is trusted only because the program actually reconstructs x. A tampered/corrupt descriptor fails here.

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impl Clone for DescriptionBound

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fn clone(&self) -> DescriptionBound

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 DescriptionBound

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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 PartialEq for DescriptionBound

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for DescriptionBound

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impl StructuralPartialEq for DescriptionBound

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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> 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.