// Copyright 2017 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. pub trait LineFormatter<'a> { type Iter: Iterator + 'a; fn iter(&'a self, line: &'a str) -> Self::Iter; fn dimensions(&'a self, line: &'a str) { let iter: Self::Iter = self.iter(line); <_ as IntoIterator>::into_iter(iter); } } fn main() {}