mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-12-05 02:50:32 +00:00
57 lines
1 KiB
Rust
57 lines
1 KiB
Rust
// run-rustfix
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#![warn(clippy::reversed_empty_ranges)]
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fn main() {
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const MAX_LEN: usize = 42;
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for i in 10..0 {
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println!("{}", i);
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}
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for i in 10..=0 {
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println!("{}", i);
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}
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for i in MAX_LEN..0 {
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println!("{}", i);
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}
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for i in 5..=5 {
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// not an error, this is the range with only one element “5”
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println!("{}", i);
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}
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for i in 0..10 {
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// not an error, the start index is less than the end index
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println!("{}", i);
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}
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for i in -10..0 {
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// not an error
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println!("{}", i);
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}
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for i in (10..0).map(|x| x * 2) {
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println!("{}", i);
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}
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// testing that the empty range lint folds constants
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for i in 10..5 + 4 {
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println!("{}", i);
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}
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for i in (5 + 2)..(3 - 1) {
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println!("{}", i);
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}
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for i in (2 * 2)..(2 * 3) {
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// no error, 4..6 is fine
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println!("{}", i);
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}
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let x = 42;
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for i in x..10 {
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// no error, not constant-foldable
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println!("{}", i);
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}
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}
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