63 lines
1.3 KiB
Rust
63 lines
1.3 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution.
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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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#![warn(clippy::useless_vec)]
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#[derive(Debug)]
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struct NonCopy;
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fn on_slice(_: &[u8]) {}
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#[allow(clippy::ptr_arg)]
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fn on_vec(_: &Vec<u8>) {}
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struct Line {
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length: usize,
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}
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impl Line {
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fn length(&self) -> usize {
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self.length
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}
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}
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fn main() {
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on_slice(&vec![]);
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on_slice(&[]);
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on_slice(&vec![1, 2]);
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on_slice(&[1, 2]);
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on_slice(&vec![1, 2]);
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on_slice(&[1, 2]);
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on_slice(&vec![1, 2]);
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on_slice(&[1, 2]);
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on_slice(&vec![1; 2]);
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on_slice(&[1; 2]);
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on_vec(&vec![]);
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on_vec(&vec![1, 2]);
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on_vec(&vec![1; 2]);
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// Now with non-constant expressions
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let line = Line { length: 2 };
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on_slice(&vec![2; line.length]);
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on_slice(&vec![2; line.length()]);
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for a in vec![1, 2, 3] {
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println!("{:?}", a);
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}
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for a in vec![NonCopy, NonCopy] {
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println!("{:?}", a);
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}
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}
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