Function path_graph 

pub fn path_graph(n: u32, directed: bool, mutual: bool) -> IgraphResult<Graph>

Path graph P_n: convenience wrapper for ring_graph(n, directed, mutual, false).

Examples

use rust_igraph::path_graph;

let p3 = path_graph(3, false, false).unwrap();
assert_eq!(p3.ecount(), 2);