38 lines
1.2 KiB
Rust
38 lines
1.2 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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#![feature(tool_lints)]
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#[deny(clippy::naive_bytecount)]
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fn main() {
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let x = vec![0_u8; 16];
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let _ = x.iter().filter(|&&a| a == 0).count(); // naive byte count
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let _ = (&x[..]).iter().filter(|&a| *a == 0).count(); // naive byte count
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let _ = x.iter().filter(|a| **a > 0).count(); // not an equality count, OK.
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let _ = x.iter().map(|a| a + 1).filter(|&a| a < 15).count(); // not a slice
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let b = 0;
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let _ = x.iter().filter(|_| b > 0).count(); // woah there
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let _ = x.iter().filter(|_a| b == b + 1).count(); // nothing to see here, move along
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let _ = x.iter().filter(|a| b + 1 == **a).count(); // naive byte count
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let y = vec![0_u16; 3];
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let _ = y.iter().filter(|&&a| a == 0).count(); // naive count, but not bytes
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}
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