penumbra_tct::internal::path

Enum WhichWay

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pub enum WhichWay {
    Leftmost,
    Left,
    Right,
    Rightmost,
}
Available on crate feature internal only.
Expand description

An enumeration of the different ways a path can go down a quadtree.

Variants§

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Leftmost

The leftmost (0th) child.

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Left

The left (1st) child.

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Right

The right (2nd) child.

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Rightmost

The rightmost (3rd) child.

Implementations§

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impl WhichWay

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pub fn at(height: u8, index: u64) -> (WhichWay, u64)

Given a height and an index of a leaf, determine which direction the path down to that leaf should branch at the node at that height.

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pub fn insert<T>(&self, item: T, siblings: [T; 3]) -> [T; 4]

Given a 3-element array, insert an item into the array in the place indicated by the WhichWay.

This is the inverse of WhichWay::pick.

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pub fn pick<T>(&self, siblings: [T; 4]) -> (T, [T; 3])

Given a 4-element array, pick out the item in the array indicated by the WhichWay, and pair it with all the others, in the order they occurred.

This is the inverse of WhichWay::insert.

Trait Implementations§

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impl Clone for WhichWay

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fn clone(&self) -> WhichWay

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 WhichWay

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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<T> Index<WhichWay> for [T; 4]

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type Output = T

The returned type after indexing.
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fn index(&self, index: WhichWay) -> &T

Performs the indexing (container[index]) operation. Read more
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impl<T> IndexMut<WhichWay> for [T; 4]

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fn index_mut(&mut self, index: WhichWay) -> &mut T

Performs the mutable indexing (container[index]) operation. Read more
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impl PartialEq for WhichWay

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

Tests for self and other values to be equal, and is used by ==.
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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 Copy for WhichWay

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impl Eq for WhichWay

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impl StructuralPartialEq for WhichWay

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impl<T> Any for T
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Gets the TypeId of self. Read more
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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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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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Causes self to use its Binary implementation when Debug-formatted.
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Causes self to use its Display implementation when Debug-formatted.
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Causes self to use its LowerExp implementation when Debug-formatted.
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