// 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(f: fn(A) -> ~[B]); } impl ~[A]: vec_monad { fn bind(f: fn(A) -> ~[B]) { let mut r = die!(); for self.each |elt| { r += f(*elt); } //~^ WARNING unreachable expression //~^^ 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` //~^^ ERROR Unconstrained region variable }