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