|  |  |  | @ -1,19 +1,19 @@ | 
			
		
	
		
			
				
					|  |  |  |  | # Traits | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | A trait is a collection of methods. | 
			
		
	
		
			
				
					|  |  |  |  | Trait 是一系列方法的集合。 | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | Data types can implement traits. To do so, the methods making up the trait are defined for the data type. For example, the `String` data type implements the `From<&str>` trait. This allows a user to write `String::from("hello")`. | 
			
		
	
		
			
				
					|  |  |  |  | 数据类型可以实现 trait。为此需要帮数据类型定义好构成 trait 的方法。  | 
			
		
	
		
			
				
					|  |  |  |  | 例如,`String` 类型实现了 `From<&str>` trait。它赋予我们能力写出 `String::from("hello")`。 | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | In this way, traits are somewhat similar to Java interfaces and C++ abstract classes. | 
			
		
	
		
			
				
					|  |  |  |  | 如此一来,trait 就有点类似于 Java 的接口和 C++ 的抽象类。 | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | Some additional common Rust traits include: | 
			
		
	
		
			
				
					|  |  |  |  | - `Clone` (the `clone` method) | 
			
		
	
		
			
				
					|  |  |  |  | - `Display` (which allows formatted display via `{}`) | 
			
		
	
		
			
				
					|  |  |  |  | - `Debug` (which allows formatted display via `{:?}`) | 
			
		
	
		
			
				
					|  |  |  |  | 另外一些常见的 Rust trait 包括: | 
			
		
	
		
			
				
					|  |  |  |  | - `Clone` (`clone` 方法) | 
			
		
	
		
			
				
					|  |  |  |  | - `Display` (实现通过 `{}` 进行格式化显示) | 
			
		
	
		
			
				
					|  |  |  |  | - `Debug` (实现通过 `{:?}` 进行格式化显示 ) | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | Because traits indicate shared behavior between data types, they are useful when writing generics. | 
			
		
	
		
			
				
					|  |  |  |  | 因为 trait 标明了数据类型之间的共有行为,所以它在编写泛型时非常有用。 | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | ## Further information | 
			
		
	
		
			
				
					|  |  |  |  | ## 更多信息 | 
			
		
	
		
			
				
					|  |  |  |  | 
 | 
			
		
	
		
			
				
					|  |  |  |  | - [Traits](https://doc.rust-lang.org/book/ch10-02-traits.html) | 
			
		
	
	
		
			
				
					|  |  |  | 
 |