This method will add vertices (as singletons) to any already present graph. Note that if you add a vertex that is already in the vertex set of the input graph, that vertex will be ignored.
i1 : G = completeGraph 4 o1 = Graph{0 => {1, 2, 3}} 1 => {0, 2, 3} 2 => {0, 1, 3} 3 => {0, 1, 2} o1 : Graph |
i2 : H = addVertices(G, {3,4,5}) o2 = Graph{0 => {1, 2, 3}} 1 => {0, 2, 3} 2 => {0, 1, 3} 3 => {0, 1, 2} 4 => {} 5 => {} o2 : Graph |
The object addVertex is a method function.