diff options
Diffstat (limited to 'src/tools/clippy/tests/ui/bytecount.rs')
-rw-r--r-- | src/tools/clippy/tests/ui/bytecount.rs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/tools/clippy/tests/ui/bytecount.rs b/src/tools/clippy/tests/ui/bytecount.rs new file mode 100644 index 000000000..d3ad26921 --- /dev/null +++ b/src/tools/clippy/tests/ui/bytecount.rs @@ -0,0 +1,26 @@ +#![allow(clippy::needless_borrow)] + +#[deny(clippy::naive_bytecount)] +fn main() { + let x = vec![0_u8; 16]; + + let _ = x.iter().filter(|&&a| a == 0).count(); // naive byte count + + let _ = (&x[..]).iter().filter(|&a| *a == 0).count(); // naive byte count + + let _ = x.iter().filter(|a| **a > 0).count(); // not an equality count, OK. + + let _ = x.iter().map(|a| a + 1).filter(|&a| a < 15).count(); // not a slice + + let b = 0; + + let _ = x.iter().filter(|_| b > 0).count(); // woah there + + let _ = x.iter().filter(|_a| b == b + 1).count(); // nothing to see here, move along + + let _ = x.iter().filter(|a| b + 1 == **a).count(); // naive byte count + + let y = vec![0_u16; 3]; + + let _ = y.iter().filter(|&&a| a == 0).count(); // naive count, but not bytes +} |