fuzzy/cluster.go
func containsNode(nodes []*raftNode, n *raftNode) bool {
	for _, rn := range nodes {
		if rn == n {
			return true
		}
	}
	return false
}
func containsNode(nodes []*raftNode, n *raftNode) bool {
	for _, rn := range nodes {
		if rn == n {
			return true
		}
	}
	return false
}
func containsNode ( nodes [ ] * raftNode , n * raftNode ) bool { for _ , rn := range nodes { if rn == n { return true } } return false }
// containsNode returns true if the slice 'nodes' contains 'n'
containsNode returns true if the slice nodes contains n