Method AddFirstElements

util/partialord/internal/dag/dag.go:125–132

AddFirstElements sets the provided elements to be first in all orderings. So if were making an ordering over {A, B, C, D, E}, and elems provided is {D, B, A} then we are guaranteed that the total ordering will begin with {D, B, A}

(nodes ...string)

// So if were making an ordering over {A, B, C, D, E}, and elems provided is {D, B, A}
// then we are guaranteed that the total ordering will begin with {D, B, A}
func (dag *DAG) AddFirstElements(nodes ...string) error {
	nodeIDs, err := dag.namesToIDs(nodes)
	if err != nil {
		return err
	}

	return dag.addFirst(nodeIDs)
}

func (dag *DAG) addFirst(nodes []int) error {
	nodeMap := map[int]bool{}