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20 lines
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20 lines
737 B
Markdown
# Traits
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A trait is a collection of methods.
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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")`.
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In this way, traits are somewhat similar to Java interfaces and C++ abstract classes.
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Some additional common Rust traits include:
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- `Clone` (the `clone` method)
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- `Display` (which allows formatted display via `{}`)
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- `Debug` (which allows formatted display via `{:?}`)
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Because traits indicate shared behavior between data types, they are useful when writing generics.
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## Further information
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- [Traits](https://doc.rust-lang.org/book/ch10-02-traits.html)
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