blob: cd3f337c4ab658e2194dc2ab8686eaaac2105eb7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::marker::MarkerTrait;
trait Node : MarkerTrait {
fn zomg();
}
trait Graph<N: Node> {
fn nodes<'a, I: Iterator<Item=&'a N>>(&'a self) -> I;
}
impl<N: Node> Graph<N> for Vec<N> {
fn nodes<'a, I: Iterator<Item=&'a N>>(&self) -> I {
self.iter() //~ ERROR mismatched types
}
}
struct Stuff;
impl Node for Stuff {
fn zomg() {
println!("zomg");
}
}
fn iterate<N: Node, G: Graph<N>>(graph: &G) {
for node in graph.iter() { //~ ERROR does not implement any method in scope named
node.zomg(); //~ error: the type of this value must be known in this context
}
}
pub fn main() {
let graph = Vec::new();
graph.push(Stuff);
iterate(graph); //~ ERROR mismatched types
}
|
