gtree

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 Go to latest Published: Jul 28, 2019 License: MIT Imports: 6 Imported by: 0

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Overview

Package gtree provides concurrent-safe/unsafe tree containers.

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type AVLTree 

type AVLTree struct {
	// contains filtered or unexported fields
}

AVLTree holds elements of the AVL tree.

func NewAVLTree 

func NewAVLTree(comparator func(v1, v2 interface{}) int, unsafe ...bool) *AVLTree

NewAVLTree instantiates an AVL tree with the custom key comparator. The parameter <unsafe> used to specify whether using tree in un-concurrent-safety, which is false in default.

func NewAVLTreeFrom 

func NewAVLTreeFrom(comparator func(v1, v2 interface{}) int, data map[interface{}]interface{}, unsafe ...bool) *AVLTree

NewAVLTreeFrom instantiates an AVL tree with the custom key comparator and data map. The parameter <unsafe> used to specify whether using tree in un-concurrent-safety, which is false in default.

func (*AVLTree) Ceiling 

func (tree *AVLTree) Ceiling(key interface{}) (ceiling *AVLTreeNode, found bool)

Ceiling finds ceiling node of the input key, return the ceiling node or nil if no ceiling node is found. Second return parameter is true if ceiling was found, otherwise false.

Ceiling node is defined as the smallest node that is larger than or equal to the given node. A ceiling node may not be found, either because the tree is empty, or because all nodes in the tree is smaller than the given node.

Key should adhere to the comparator's type assertion, otherwise method panics.

func (*AVLTree) Clear 

func (tree *AVLTree) Clear()

Clear removes all nodes from the tree.

func (*AVLTree) Clone 

func (tree *AVLTree) Clone(unsafe ...bool) *AVLTree

Clone returns a new tree with a copy of current tree.

func (*AVLTree) Contains 

func (tree *AVLTree) Contains(key interface{}) bool

Contains checks whether <key> exists in the tree.

func (*AVLTree) Flip 

func (tree *AVLTree) Flip(comparator ...func(v1, v2 interface{}) int)

Flip exchanges key-value of the tree to value-key. Note that you should guarantee the value is the same type as key, or else the comparator would panic.

If the type of value is different with key, you pass the new <comparator>.

func (*AVLTree) Floor 

func (tree *AVLTree) Floor(key interface{}) (floor *AVLTreeNode, found bool)

Floor Finds floor node of the input key, return the floor node or nil if no floor node is found. Second return parameter is true if floor was found, otherwise false.

Floor node is defined as the largest node that is smaller than or equal to the given node. A floor node may not be found, either because the tree is empty, or because all nodes in the tree is larger than the given node.

Key should adhere to the comparator's type assertion, otherwise method panics.

func (*AVLTree) Get 

func (tree *AVLTree) Get(key interface{}) (value interface{})

Get searches the node in the tree by <key> and returns its value or nil if key is not found in tree.

func (*AVLTree) GetOrSet 

func (tree *AVLTree) GetOrSet(key interface{}, value interface{}) interface{}

GetOrSet returns the value by key, or set value with given <value> if not exist and returns this value.

func (*AVLTree) GetOrSetFunc 

func (tree *AVLTree) GetOrSetFunc(key interface{}, f func() interface{}) interface{}

GetOrSetFunc returns the value by key, or sets value with return value of callback function <f> if not exist and returns this value.

func (*AVLTree) GetOrSetFuncLock 

func (tree *AVLTree) GetOrSetFuncLock(key interface{}, f func() interface{}) interface{}

GetOrSetFuncLock returns the value by key, or sets value with return value of callback function <f> if not exist and returns this value.

GetOrSetFuncLock differs with GetOrSetFunc function is that it executes function <f> with mutex.Lock of the hash map.

func (*AVLTree) GetVar 

func (tree *AVLTree) GetVar(key interface{}) *gvar.Var

GetVar returns a gvar.Var with the value by given <key>. The returned gvar.Var is un-concurrent safe.

func (*AVLTree) GetVarOrSet 

func (tree *AVLTree) GetVarOrSet(key interface{}, value interface{}) *gvar.Var

GetVarOrSet returns a gvar.Var with result from GetVarOrSet. The returned gvar.Var is un-concurrent safe.

func (*AVLTree) GetVarOrSetFunc 

func (tree *AVLTree) GetVarOrSetFunc(key interface{}, f func() interface{}) *gvar.Var

GetVarOrSetFunc returns a gvar.Var with result from GetOrSetFunc. The returned gvar.Var is un-concurrent safe.

func (*AVLTree) GetVarOrSetFuncLock 

func (tree *AVLTree) GetVarOrSetFuncLock(key interface{}, f func() interface{}) *gvar.Var

GetVarOrSetFuncLock returns a gvar.Var with result from GetOrSetFuncLock. The returned gvar.Var is un-concurrent safe.

func (*AVLTree) IsEmpty 

func (tree *AVLTree) IsEmpty() bool

IsEmpty returns true if tree does not contain any nodes.

func (*AVLTree) Iterator 

func (tree *AVLTree) Iterator(f func(key, value interface{}) bool)

Iterator is alias of IteratorAsc.

func (*AVLTree) IteratorAsc 

func (tree *AVLTree) IteratorAsc(f func(key, value interface{}) bool)

IteratorAsc iterates the tree in ascending order with given callback function <f>. If <f> returns true, then it continues iterating; or false to stop.

func (*AVLTree) IteratorDesc 

func (tree *AVLTree) IteratorDesc(f func(key, value interface{}) bool)

IteratorDesc iterates the tree in descending order with given callback function <f>. If <f> returns true, then it continues iterating; or false to stop.

func (*AVLTree) Keys 

func (tree *AVLTree) Keys() []interface{}

Keys returns all keys in asc order.

func (*AVLTree) Left 

func (tree *AVLTree) Left() *AVLTreeNode

Left returns the minimum element of the AVL tree or nil if the tree is empty.

func (*AVLTree) Map 

func (tree *AVLTree) Map() map[interface{}]interface{}

Map returns all key-value items as map.

func (*AVLTree) MarshalJSON 

func (tree *AVLTree) MarshalJSON() ([]byte, error)

MarshalJSON implements the interface MarshalJSON for json.Marshal.

func (*AVLTree) Print 

func (tree *AVLTree) Print()

Print prints the tree to stdout.

func (*AVLTree) Remove 

func (tree *AVLTree) Remove(key interface{}) (value interface{})

Remove removes the node from the tree by key. Key should adhere to the comparator's type assertion, otherwise method panics.

func (*AVLTree) Removes 

func (tree *AVLTree) Removes(keys []interface{})

Removes batch deletes values of the tree by <keys>.

func (*AVLTree) Right 

func (tree *AVLTree) Right() *AVLTreeNode

Right returns the maximum element of the AVL tree or nil if the tree is empty.

func (*AVLTree) Search 

func (tree *AVLTree) Search(key interface{}) (value interface{}, found bool)

Search searches the tree with given <key>. Second return parameter <found> is true if key was found, otherwise false.

func (*AVLTree) Set 

func (tree *AVLTree) Set(key interface{}, value interface{})

Set inserts node into the tree.

func (*AVLTree) SetIfNotExist 

func (tree *AVLTree) SetIfNotExist(key interface{}, value interface{}) bool

SetIfNotExist sets <value> to the map if the <key> does not exist, then return true. It returns false if <key> exists, and <value> would be ignored.

func (*AVLTree) SetIfNotExistFunc 

func (tree *AVLTree) SetIfNotExistFunc(key interface{}, f func() interface{}) bool

SetIfNotExistFunc sets value with return value of callback function <f>, then return true. It returns false if <key> exists, and <value> would be ignored.

func (*AVLTree) SetIfNotExistFuncLock 

func (tree *AVLTree) SetIfNotExistFuncLock(key interface{}, f func() interface{}) bool

SetIfNotExistFuncLock sets value with return value of callback function <f>, then return true. It returns false if <key> exists, and <value> would be ignored.

SetIfNotExistFuncLock differs with SetIfNotExistFunc function is that it executes function <f> with mutex.Lock of the hash map.

func (*AVLTree) Sets 

func (tree *AVLTree) Sets(data map[interface{}]interface{})

Sets batch sets key-values to the tree.

func (*AVLTree) Size 

func (tree *AVLTree) Size() int

Size returns number of nodes in the tree.

func (*AVLTree) String 

func (tree *AVLTree) String() string

String returns a string representation of container

func (*AVLTree) Values 

func (tree *AVLTree) Values() []interface{}

Values returns all values in asc order based on the key.

type AVLTreeNode 

type AVLTreeNode struct {
	Key   interface{}
	Value interface{}
	// contains filtered or unexported fields
}

AVLTreeNode is a single element within the tree.

func (*AVLTreeNode) Next 

func (node *AVLTreeNode) Next() *AVLTreeNode

Next returns the next element in an inorder walk of the AVL tree.

func (*AVLTreeNode) Prev 

func (node *AVLTreeNode) Prev() *AVLTreeNode

Prev returns the previous element in an inorder walk of the AVL tree.

type BTree 

type BTree struct {
	// contains filtered or unexported fields
}

BTree holds elements of the B-tree.

func NewBTree 

func NewBTree(m int, comparator func(v1, v2 interface{}) int, unsafe ...bool) *BTree

NewBTree instantiates a B-tree with <m> (maximum number of children) and a custom key comparator. The parameter <unsafe> used to specify whether using tree in un-concurrent-safety, which is false in default. Note that the <m> must be greater or equal than 3, or else it panics.

func NewBTreeFrom 

func NewBTreeFrom(m int, comparator func(v1, v2 interface{}) int, data map[interface{}]interface{}, unsafe ...bool) *BTree

NewBTreeFrom instantiates a B-tree with <m> (maximum number of children), a custom key comparator and data map. The parameter <unsafe> used to specify whether using tree in un-concurrent-safety, which is false in default.

func (*BTree) Clear 

func (tree *BTree) Clear()

Clear removes all nodes from the tree.

func (*BTree) Clone 

func (tree *BTree) Clone(unsafe ...bool) *BTree

Clone returns a new tree with a copy of current tree.

func (*BTree) Contains 

func (tree *BTree) Contains(key interface{}) bool

Contains checks whether <key> exists in the tree.

func (*BTree) Get 

func (tree *BTree) Get(key interface{}) (value interface{})

Get searches the node in the tree by <key> and returns its value or nil if key is not found in tree.

func (*BTree) GetOrSet 

func (tree *BTree) GetOrSet(key interface{}, value interface{}) interface{}

GetOrSet returns the value by key, or set value with given <value> if not exist and returns this value.

func (*BTree) GetOrSetFunc 

func (tree *BTree) GetOrSetFunc(key interface{}, f func() interface{}) interface{}

GetOrSetFunc returns the value by key, or sets value with return value of callback function <f> if not exist and returns this value.

func (*BTree) GetOrSetFuncLock 

func (tree *BTree) GetOrSetFuncLock(key interface{}, f func() interface{}) interface{}

GetOrSetFuncLock returns the value by key, or sets value with return value of callback function <f> if not exist and returns this value.

GetOrSetFuncLock differs with GetOrSetFunc function is that it executes function <f> with mutex.Lock of the hash map.

func (*BTree) GetVar 

func (tree *BTree) GetVar(key interface{}) *gvar.Var

GetVar returns a gvar.Var with the value by given <key>. The returned gvar.Var is un-concurrent safe.

func (*BTree) GetVarOrSet 

func (tree *BTree) GetVarOrSet(key interface{}, value interface{}) *gvar.Var

GetVarOrSet returns a gvar.Var with result from GetVarOrSet. The returned gvar.Var is un-concurrent safe.

func (*BTree) GetVarOrSetFunc 

func (tree *BTree) GetVarOrSetFunc(key interface{}, f func() interface{}) *gvar.Var

GetVarOrSetFunc returns a gvar.Var with result from GetOrSetFunc. The returned gvar.Var is un-concurrent safe.

func (*BTree) GetVarOrSetFuncLock 

func (tree *BTree) GetVarOrSetFuncLock(key interface{}, f func() interface{}) *gvar.Var

GetVarOrSetFuncLock returns a gvar.Var with result from GetOrSetFuncLock. The returned gvar.Var is un-concurrent safe.

func (*BTree) Height 

func (tree *BTree) Height() int

Height returns the height of the tree.

func (*BTree) IsEmpty 

func (tree *BTree) IsEmpty() bool

Empty returns true if tree does not contain any nodes

func (*BTree) Iterator 

func (tree *BTree) Iterator(f func(key, value interface{}) bool)

Iterator is alias of IteratorAsc.

func (*BTree) IteratorAsc 

func (tree *BTree) IteratorAsc(f func(key, value interface{}) bool)

IteratorAsc iterates the tree in ascending order with given callback function <f>. If <f> returns true, then it continues iterating; or false to stop.

func (*BTree) IteratorDesc 

func (tree *BTree) IteratorDesc(f func(key, value interface{}) bool)

IteratorDesc iterates the tree in descending order with given callback function <f>. If <f> returns true, then it continues iterating; or false to stop.

func (*BTree) Keys 

func (tree *BTree) Keys() []interface{}

Keys returns all keys in asc order.

func (*BTree) Left 

func (tree *BTree) Left() *BTreeEntry

Left returns the left-most (min) entry or nil if tree is empty.

func (*BTree) Map 

func (tree *BTree) Map() map[interface{}]interface{}

Map returns all key-value items as map.

func (*BTree) MarshalJSON 

func (tree *BTree) MarshalJSON() ([]byte, error)

MarshalJSON implements the interface MarshalJSON for json.Marshal.

func (*BTree) Print 

func (tree *BTree) Print()

Print prints the tree to stdout.

func (*BTree) Remove 

func (tree *BTree) Remove(key interface{}) (value interface{})

Remove removes the node from the tree by <key>.

func (*BTree) Removes 

func (tree *BTree) Removes(keys []interface{})

Removes batch deletes values of the tree by <keys>.

func (*BTree) Right 

func (tree *BTree) Right() *BTreeEntry

Right returns the right-most (max) entry or nil if tree is empty.

func (*BTree) Search 

func (tree *BTree) Search(key interface{}) (value interface{}, found bool)

Search searches the tree with given <key>. Second return parameter <found> is true if key was found, otherwise false.

func (*BTree) Set 

func (tree *BTree) Set(key interface{}, value interface{})

Set inserts key-value item into the tree.

func (*BTree) SetIfNotExist 

func (tree *BTree) SetIfNotExist(key interface{}, value interface{}) bool

SetIfNotExist sets <value> to the map if the <key> does not exist, then return true. It returns false if <key> exists, and <value> would be ignored.

func (*BTree) SetIfNotExistFunc 

func (tree *BTree) SetIfNotExistFunc(key interface{}, f func() interface{}) bool

SetIfNotExistFunc sets value with return value of callback function <f>, then return true. It returns false if <key> exists, and <value> would be ignored.

func (*BTree) SetIfNotExistFuncLock 

func (tree *BTree) SetIfNotExistFuncLock(key interface{}, f func() interface{}) bool

SetIfNotExistFuncLock sets value with return value of callback function <f>, then return true. It returns false if <key> exists, and <value> would be ignored.

SetIfNotExistFuncLock differs with SetIfNotExistFunc function is that it executes function <f> with mutex.Lock of the hash map.

func (*BTree) Sets 

func (tree *BTree) Sets(data map[interface{}]interface{})

Sets batch sets key-values to the tree.

func (*BTree) Size 

func (tree *BTree) Size() int

Size returns number of nodes in the tree.

func (*BTree) String 

func (tree *BTree) String() string

String returns a string representation of container (for debugging purposes)

func (*BTree) Values 

func (tree *BTree) Values() []interface{}

Values returns all values in asc order based on the key.

type BTreeEntry 

type BTreeEntry struct {
	Key   interface{}
	Value interface{}
}

BTreeEntry represents the key-value pair contained within nodes.

type BTreeNode 

type BTreeNode struct {
	Parent   *BTreeNode
	Entries  []*BTreeEntry // Contained keys in node
	Children []*BTreeNode  // Children nodes
}

BTreeNode is a single element within the tree.

type RedBlackTree 

type RedBlackTree struct {
	// contains filtered or unexported fields
}

RedBlackTree holds elements of the red-black tree.

func NewRedBlackTree 

func NewRedBlackTree(comparator func(v1, v2 interface{}) int, unsafe ...bool) *RedBlackTree

NewRedBlackTree instantiates a red-black tree with the custom key comparator. The parameter <unsafe> used to specify whether using tree in un-concurrent-safety, which is false in default.

func NewRedBlackTreeFrom 

func NewRedBlackTreeFrom(comparator func(v1, v2 interface{}) int, data map[interface{}]interface{}, unsafe ...bool) *RedBlackTree

NewRedBlackTreeFrom instantiates a red-black tree with the custom key comparator and <data> map. The parameter <unsafe> used to specify whether using tree in un-concurrent-safety, which is false in default.

func (*RedBlackTree) Ceiling 

func (tree *RedBlackTree) Ceiling(key interface{}) (ceiling *RedBlackTreeNode, found bool)

Ceiling finds ceiling node of the input key, return the ceiling node or nil if no ceiling node is found. Second return parameter is true if ceiling was found, otherwise false.

Ceiling node is defined as the smallest node that its key is larger than or equal to the given <key>. A ceiling node may not be found, either because the tree is empty, or because all nodes in the tree are smaller than the given node.

func (*RedBlackTree) Clear 

func (tree *RedBlackTree) Clear()

Clear removes all nodes from the tree.

func (*RedBlackTree) Clone 

func (tree *RedBlackTree) Clone(unsafe ...bool) *RedBlackTree

Clone returns a new tree with a copy of current tree.

func (*RedBlackTree) Contains 

func (tree *RedBlackTree) Contains(key interface{}) bool

Contains checks whether <key> exists in the tree.

func (*RedBlackTree) Flip 

func (tree *RedBlackTree) Flip(comparator ...func(v1, v2 interface{}) int)

Flip exchanges key-value of the tree to value-key. Note that you should guarantee the value is the same type as key, or else the comparator would panic.

If the type of value is different with key, you pass the new <comparator>.

func (*RedBlackTree) Floor 

func (tree *RedBlackTree) Floor(key interface{}) (floor *RedBlackTreeNode, found bool)

Floor Finds floor node of the input key, return the floor node or nil if no floor node is found. Second return parameter is true if floor was found, otherwise false.

Floor node is defined as the largest node that its key is smaller than or equal to the given <key>. A floor node may not be found, either because the tree is empty, or because all nodes in the tree are larger than the given node.

func (*RedBlackTree) Get 

func (tree *RedBlackTree) Get(key interface{}) (value interface{})

Get searches the node in the tree by <key> and returns its value or nil if key is not found in tree.

func (*RedBlackTree) GetOrSet 

func (tree *RedBlackTree) GetOrSet(key interface{}, value interface{}) interface{}

GetOrSet returns the value by key, or set value with given <value> if not exist and returns this value.

func (*RedBlackTree) GetOrSetFunc 

func (tree *RedBlackTree) GetOrSetFunc(key interface{}, f func() interface{}) interface{}

GetOrSetFunc returns the value by key, or sets value with return value of callback function <f> if not exist and returns this value.

func (*RedBlackTree) GetOrSetFuncLock 

func (tree *RedBlackTree) GetOrSetFuncLock(key interface{}, f func() interface{}) interface{}

GetOrSetFuncLock returns the value by key, or sets value with return value of callback function <f> if not exist and returns this value.

GetOrSetFuncLock differs with GetOrSetFunc function is that it executes function <f> with mutex.Lock of the hash map.

func (*RedBlackTree) GetVar 

func (tree *RedBlackTree) GetVar(key interface{}) *gvar.Var

GetVar returns a gvar.Var with the value by given <key>. The returned gvar.Var is un-concurrent safe.

func (*RedBlackTree) GetVarOrSet 

func (tree *RedBlackTree) GetVarOrSet(key interface{}, value interface{}) *gvar.Var

GetVarOrSet returns a gvar.Var with result from GetVarOrSet. The returned gvar.Var is un-concurrent safe.

func (*RedBlackTree) GetVarOrSetFunc 

func (tree *RedBlackTree) GetVarOrSetFunc(key interface{}, f func() interface{}) *gvar.Var

GetVarOrSetFunc returns a gvar.Var with result from GetOrSetFunc. The returned gvar.Var is un-concurrent safe.

func (*RedBlackTree) GetVarOrSetFuncLock 

func (tree *RedBlackTree) GetVarOrSetFuncLock(key interface{}, f func() interface{}) *gvar.Var

GetVarOrSetFuncLock returns a gvar.Var with result from GetOrSetFuncLock. The returned gvar.Var is un-concurrent safe.

func (*RedBlackTree) IsEmpty 

func (tree *RedBlackTree) IsEmpty() bool

IsEmpty returns true if tree does not contain any nodes.

func (*RedBlackTree) Iterator 

func (tree *RedBlackTree) Iterator(f func(key, value interface{}) bool)

Iterator is alias of IteratorAsc.

func (*RedBlackTree) IteratorAsc 

func (tree *RedBlackTree) IteratorAsc(f func(key, value interface{}) bool)

IteratorAsc iterates the tree in ascending order with given callback function <f>. If <f> returns true, then it continues iterating; or false to stop.

func (*RedBlackTree) IteratorDesc 

func (tree *RedBlackTree) IteratorDesc(f func(key, value interface{}) bool)

IteratorDesc iterates the tree in descending order with given callback function <f>. If <f> returns true, then it continues iterating; or false to stop.

func (*RedBlackTree) Keys 

func (tree *RedBlackTree) Keys() []interface{}

Keys returns all keys in asc order.

func (*RedBlackTree) Left 

func (tree *RedBlackTree) Left() *RedBlackTreeNode

Left returns the left-most (min) node or nil if tree is empty.

func (*RedBlackTree) Map 

func (tree *RedBlackTree) Map() map[interface{}]interface{}

Map returns all key-value items as map.

func (*RedBlackTree) MarshalJSON 

func (tree *RedBlackTree) MarshalJSON() ([]byte, error)

MarshalJSON implements the interface MarshalJSON for json.Marshal.

func (*RedBlackTree) Print 

func (tree *RedBlackTree) Print()

Print prints the tree to stdout.

func (*RedBlackTree) Remove 

func (tree *RedBlackTree) Remove(key interface{}) (value interface{})

Remove removes the node from the tree by <key>.

func (*RedBlackTree) Removes 

func (tree *RedBlackTree) Removes(keys []interface{})

Removes batch deletes values of the tree by <keys>.

func (*RedBlackTree) Right 

func (tree *RedBlackTree) Right() *RedBlackTreeNode

Right returns the right-most (max) node or nil if tree is empty.

func (*RedBlackTree) Search 

func (tree *RedBlackTree) Search(key interface{}) (value interface{}, found bool)

Search searches the tree with given <key>. Second return parameter <found> is true if key was found, otherwise false.

func (*RedBlackTree) Set 

func (tree *RedBlackTree) Set(key interface{}, value interface{})

Set inserts key-value item into the tree.

func (*RedBlackTree) SetIfNotExist 

func (tree *RedBlackTree) SetIfNotExist(key interface{}, value interface{}) bool

SetIfNotExist sets <value> to the map if the <key> does not exist, then return true. It returns false if <key> exists, and <value> would be ignored.

func (*RedBlackTree) SetIfNotExistFunc 

func (tree *RedBlackTree) SetIfNotExistFunc(key interface{}, f func() interface{}) bool

SetIfNotExistFunc sets value with return value of callback function <f>, then return true. It returns false if <key> exists, and <value> would be ignored.

func (*RedBlackTree) SetIfNotExistFuncLock 

func (tree *RedBlackTree) SetIfNotExistFuncLock(key interface{}, f func() interface{}) bool

SetIfNotExistFuncLock sets value with return value of callback function <f>, then return true. It returns false if <key> exists, and <value> would be ignored.

SetIfNotExistFuncLock differs with SetIfNotExistFunc function is that it executes function <f> with mutex.Lock of the hash map.

func (*RedBlackTree) Sets 

func (tree *RedBlackTree) Sets(data map[interface{}]interface{})

Sets batch sets key-values to the tree.

func (*RedBlackTree) Size 

func (tree *RedBlackTree) Size() int

Size returns number of nodes in the tree.

func (*RedBlackTree) String 

func (tree *RedBlackTree) String() string

String returns a string representation of container.

func (*RedBlackTree) Values 

func (tree *RedBlackTree) Values() []interface{}

Values returns all values in asc order based on the key.

type RedBlackTreeNode 

type RedBlackTreeNode struct {
	Key   interface{}
	Value interface{}
	// contains filtered or unexported fields
}

RedBlackTreeNode is a single element within the tree.

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