// 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. trait vec_monad { fn bind(&self, f: F) where F: FnMut(A) -> Vec; } impl vec_monad for Vec { fn bind(&self, mut f: F) where F: FnMut(A) -> Vec { let mut r = panic!(); for elt in self { r = r + f(*elt); } //~^ ERROR binary operation `+` cannot be applied to type `collections::vec::Vec` } } fn main() { ["hi"].bind(|x| [x] ); //~^ ERROR type `[&str; 1]` does not implement any method in scope named `bind` }