33 lines
782 B
Rust
33 lines
782 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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#![allow(dead_code)]
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trait Deref {
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fn get(self) -> isize;
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}
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impl<'a> Deref for &'a isize {
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fn get(self) -> isize {
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*self
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}
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}
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fn with<R:Deref, F>(f: F) -> isize where F: FnOnce(&isize) -> R {
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f(&3).get()
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}
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fn return_it() -> isize {
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with(|o| o) //~ ERROR cannot infer
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}
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fn main() {
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}
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