39 lines
659 B
Rust
39 lines
659 B
Rust
trait Node {
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fn zomg();
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}
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trait Graph<N: Node> {
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fn nodes<'a, I: Iterator<Item=&'a N>>(&'a self) -> I
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where N: 'a;
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}
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impl<N: Node> Graph<N> for Vec<N> {
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fn nodes<'a, I: Iterator<Item=&'a N>>(&self) -> I
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where N: 'a
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{
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self.iter() //~ ERROR mismatched types
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}
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}
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struct Stuff;
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impl Node for Stuff {
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fn zomg() {
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println!("zomg");
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}
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}
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fn iterate<N: Node, G: Graph<N>>(graph: &G) {
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for node in graph.iter() { //~ ERROR no method named `iter` found
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node.zomg();
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}
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}
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pub fn main() {
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let graph = Vec::new();
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graph.push(Stuff);
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iterate(graph); //~ ERROR mismatched types
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}
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