mirror of https://github.com/sunface/rust-course
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
20 lines
737 B
20 lines
737 B
3 years ago
|
# Traits
|
||
|
|
|
||
|
|
A trait is a collection of methods.
|
||
|
|
|
||
|
|
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")`.
|
||
|
|
|
||
|
|
In this way, traits are somewhat similar to Java interfaces and C++ abstract classes.
|
||
|
|
|
||
|
|
Some additional common Rust traits include:
|
||
|
|
- `Clone` (the `clone` method)
|
||
|
|
- `Display` (which allows formatted display via `{}`)
|
||
|
|
- `Debug` (which allows formatted display via `{:?}`)
|
||
|
|
|
||
|
|
Because traits indicate shared behavior between data types, they are useful when writing generics.
|
||
|
|
|
||
|
|
|
||
|
|
## Further information
|
||
|
|
|
||
|
|
- [Traits](https://doc.rust-lang.org/book/ch10-02-traits.html)
|