rust/src/test/compile-fail/issue-2149.rs

26 lines
882 B
Rust
Raw Normal View History

// Copyright 2012 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.
trait vec_monad<A> {
fn bind<B>(&self, f: |A| -> ~[B]);
}
impl<A> vec_monad<A> for ~[A] {
fn bind<B>(&self, f: |A| -> ~[B]) {
let mut r = fail!();
for elt in self.iter() { r = r + f(*elt); }
//~^ ERROR the type of this value must be known
}
}
fn main() {
["hi"].bind(|x| [x] );
//~^ ERROR type `[&'static str, .. 1]` does not implement any method in scope named `bind`
}