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Document std::ops style

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Aleksey Kladov 2021-01-07 19:27:47 +03:00
parent b821264f86
commit eb710a63ca
1 changed files with 9 additions and 1 deletions
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10
docs/dev/style.md
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@ -435,7 +435,7 @@ Avoid local `use MyEnum::*` imports.
Prefer `use crate::foo::bar` to `use super::bar`.
When implementing `Debug` or `Display`, import `std::fmt`:
When implementing traits from `std::fmt` or `std::ops`, import the module:
```rust
// Good
@ -449,6 +449,14 @@ impl fmt::Display for RenameError {
impl std::fmt::Display for RenameError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { .. }
}
// Not as good
use std::ops::Deref;
impl Deref for Widget {
type Target = str;
fn deref(&self) -> &str { .. }
}
```
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