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authorAleksey Kladov <[email protected]>2021-03-03 08:23:05 +0000
committerAleksey Kladov <[email protected]>2021-03-03 08:23:05 +0000
commite15621482c1b25dba5f4d2bf60f7546149edb6af (patch)
tree33647b685bb59b836f62170c7f1515dba90ccab9 /docs
parent0ce539ec969125dd757f06ef97a75f89876b07c5 (diff)
Clarify comparison rule
Diffstat (limited to 'docs')
-rw-r--r--docs/dev/style.md8
1 files changed, 7 insertions, 1 deletions
diff --git a/docs/dev/style.md b/docs/dev/style.md
index dd71e3932..93ad98f20 100644
--- a/docs/dev/style.md
+++ b/docs/dev/style.md
@@ -769,14 +769,20 @@ fn foo() -> Option<Bar> {
769 769
770## Comparisons 770## Comparisons
771 771
772Use `<`/`<=`, avoid `>`/`>=`. 772When doing multiple comparisons use `<`/`<=`, avoid `>`/`>=`.
773 773
774```rust 774```rust
775// GOOD 775// GOOD
776assert!(lo <= x && x <= hi); 776assert!(lo <= x && x <= hi);
777assert!(r1 < l2 || r2 < l1);
778assert!(x < y);
779assert!(x > 0);
777 780
778// BAD 781// BAD
779assert!(x >= lo && x <= hi>); 782assert!(x >= lo && x <= hi>);
783assert!(r1 < l2 || l1 > r2);
784assert!(y > x);
785assert!(0 > x);
780``` 786```
781 787
782**Rationale:** Less-then comparisons are more intuitive, they correspond spatially to [real line](https://en.wikipedia.org/wiki/Real_line). 788**Rationale:** Less-then comparisons are more intuitive, they correspond spatially to [real line](https://en.wikipedia.org/wiki/Real_line).