Request: add methods Min() and Max() to TreeSet

[miparnisari]

I see that TreeSet is

type Set struct {
	tree *rbt.Tree
}

and rbt.Tree has Left() and Right() to get the min and max:

gods/trees/redblacktree/redblacktree.go

Lines 196 to 216 in 14f7142

	// Left returns the left-most (min) node or nil if tree is empty.
	func (tree *Tree[K, V]) Left() *Node[K, V] {
	var parent *Node[K, V]
	current := tree.Root
	for current != nil {
	parent = current
	current = current.Left
	}
	return parent
	}
	// Right returns the right-most (max) node or nil if tree is empty.
	func (tree *Tree[K, V]) Right() *Node[K, V] {
	var parent *Node[K, V]
	current := tree.Root
	for current != nil {
	parent = current
	current = current.Right
	}
	return parent
	}

Can we expose those methods in the TreeSet too? The workaround of calling arr := treeset.Values() and then grabbing arr[0] and arr[len(arr)-1] seems very wasteful.

[yossev]

Should be there now.