node

type KNode[K comparable, T any] struct {
	Next  *KNode[K, T]
	Key   K
	Value T
}

type LinkedKNode[K comparable, T any] struct {
	Prev, Next *LinkedKNode[K, T]
	Key        K
	Value      T
}

type LinkedNode[T any] struct {
	Prev, Next *LinkedNode[T]
	Value      T
}

type LinkedOrdKNode[K constraints.Ordered, T any] struct {
	Prev, Next *LinkedOrdKNode[K, T]
	Key        K
	Value      T
}

type Node[T any] struct {
	Next  *Node[T]
	Value T
}

type OrdKNode[K constraints.Ordered, T any] struct {
	Next  *OrdKNode[K, T]
	Key   K
	Value T
}