1 // Copyright 2014-2019 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution.
4 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
5 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
7 // option. This file may not be copied, modified, or distributed
8 // except according to those terms.
11 #![allow(unused_imports)]
15 clippy::mem_replace_option_with_none,
16 clippy::mem_replace_with_default
21 fn replace_option_with_none() {
22 let mut an_option = Some(1);
23 let _ = an_option.take();
24 let an_option = &mut Some(1);
25 let _ = an_option.take();
28 fn replace_with_default() {
29 let mut s = String::from("foo");
30 let _ = std::mem::take(&mut s);
31 let s = &mut String::from("foo");
32 let _ = std::mem::take(s);
33 let _ = std::mem::take(s);
37 replace_option_with_none();
38 replace_with_default();