blob: 58657b934fbfeb08e74e5d80569bff16afe4a9cc (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
// Copyright 2014-2019 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// run-rustfix
#![allow(unused_imports)]
#![warn(
clippy::all,
clippy::style,
clippy::mem_replace_option_with_none,
clippy::mem_replace_with_default
)]
use std::mem;
fn replace_option_with_none() {
let mut an_option = Some(1);
let _ = an_option.take();
let an_option = &mut Some(1);
let _ = an_option.take();
}
fn replace_with_default() {
let mut s = String::from("foo");
let _ = std::mem::take(&mut s);
let s = &mut String::from("foo");
let _ = std::mem::take(s);
let _ = std::mem::take(s);
}
fn main() {
replace_option_with_none();
replace_with_default();
}
|
