b4bbf3a88d
Also change several error messages to refer to "items" rather than "methods", since associated items that require resolution during type checking are not always methods.
46 lines
1.1 KiB
Rust
46 lines
1.1 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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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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}
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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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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(); //~ error: the type of this value must be known in this context
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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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