Method setEdgeValue

src/graph.js:90–99

(x, y, v)

		}

		setEdgeValue (x, y, v) {
			let result = false;

			if (defined(this.nodes[x]) && defined(this.nodes[x].edges[y])) {
				this.nodes[x].edges[y] = this.nodes[y].edges[x] = defined(v) ? v : null;
				result = true;
			}

			return result;
		}

		setNodeValue (x, v) {
			const n = this.nodes[x];