Rust code shared from the playground

playground.rs

use std::collections::HashMap;

trait Graph {
    type Node;
    type Edge;
}

struct GraphImpl<N, E> {
    h: HashMap<N, Vec<E>>,
}

type MyNode = i32;
type MyEdge = i32;

type MyGraph = GraphImpl<MyNode, MyEdge>;

impl<N, E> Graph for GraphImpl<N, E> {
    type Node = N;
    type Edge = E;
}

fn main() {
    let x: <MyGraph as Graph>::Node;
}