# SortedDigraph -- hashtable used in topSort

## Description

This is a type of hashtable.The output of topSort has class SortedDigraph. In the current version of Graphs (version 0.3.3) the only use of SortedDigraph is in topSort.

 i1 : G = digraph{{5,2},{5,0},{4,0},{4,1},{2,3},{3,1}} o1 = Digraph{0 => {} } 1 => {} 2 => {3} 3 => {1} 4 => {0, 1} 5 => {2, 0} o1 : Digraph i2 : H = topSort G o2 = SortedDigraph{digraph => Digraph{0 => {} } } 1 => {} 2 => {3} 3 => {1} 4 => {0, 1} 5 => {2, 0} map => HashTable{0 => 4} 1 => 6 2 => 3 3 => 5 4 => 2 5 => 1 newDigraph => Digraph{1 => {3, 4}} 2 => {4, 6} 3 => {5} 4 => {} 5 => {6} 6 => {} o2 : SortedDigraph i3 : class H o3 = SortedDigraph o3 : Type