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Code Issues Releases Activity

Equal -> Equals for consistency (#1004)

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* Equal -> Equals for consistency

* forgot one
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Dominik Maier 2023-07-18 11:02:35 +02:00 committed by GitHub
parent 46a38bc67a
commit 640be0770a
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1 changed files with 17 additions and 17 deletions
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src/traits/default-methods.md
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@ -4,9 +4,9 @@ Traits can implement behavior in terms of other trait methods:
```rust,editable ```rust,editable
trait Equals { trait Equals {
fn equal(&self, other: &Self) -> bool; fn equals(&self, other: &Self) -> bool;
fn not_equal(&self, other: &Self) -> bool { fn not_equals(&self, other: &Self) -> bool {
!self.equal(other) !self.equals(other)
} }
} }
@ -14,7 +14,7 @@ trait Equals {
struct Centimeter(i16); struct Centimeter(i16);
impl Equals for Centimeter { impl Equals for Centimeter {
fn equal(&self, other: &Centimeter) -> bool { fn equals(&self, other: &Centimeter) -> bool {
self.0 == other.0 self.0 == other.0
} }
} }
@ -22,8 +22,8 @@ impl Equals for Centimeter {
fn main() { fn main() {
let a = Centimeter(10); let a = Centimeter(10);
let b = Centimeter(20); let b = Centimeter(20);
println!("{a:?} equals {b:?}: {}", a.equal(&b)); println!("{a:?} equals {b:?}: {}", a.equals(&b));
println!("{a:?} not_equals {b:?}: {}", a.not_equal(&b)); println!("{a:?} not_equals {b:?}: {}", a.not_equals(&b));
} }
``` ```
@ -32,26 +32,26 @@ fn main() {
* Traits may specify pre-implemented (default) methods and methods that users are required to * Traits may specify pre-implemented (default) methods and methods that users are required to
implement themselves. Methods with default implementations can rely on required methods. implement themselves. Methods with default implementations can rely on required methods.
* Move method `not_equal` to a new trait `NotEqual`. * Move method `not_equals` to a new trait `NotEquals`.
* Make `Equals` a super trait for `NotEqual`. * Make `Equals` a super trait for `NotEquals`.
```rust,editable,compile_fail ```rust,editable,compile_fail
trait NotEqual: Equals { trait NotEquals: Equals {
fn not_equal(&self, other: &Self) -> bool { fn not_equals(&self, other: &Self) -> bool {
!self.equal(other) !self.equals(other)
} }
} }
``` ```
* Provide a blanket implementation of `NotEqual` for `Equal`. * Provide a blanket implementation of `NotEquals` for `Equals`.
```rust,editable,compile_fail ```rust,editable,compile_fail
trait NotEqual { trait NotEquals {
fn not_equal(&self, other: &Self) -> bool; fn not_equals(&self, other: &Self) -> bool;
} }
impl<T> NotEqual for T where T: Equals { impl<T> NotEquals for T where T: Equals {
fn not_equal(&self, other: &Self) -> bool { fn not_equals(&self, other: &Self) -> bool {
!self.equal(other) !self.equals(other)
} }
} }
``` ```