maybe-owned  

provides a MaybeOwned<'a,T> type different to std's Cow it implements From<T> and From<&'a T> and does not require ToOwned

This crate provides a MaybeOwned<'a,T> enum. Different to std::borrow::Cow it implements From<T> and From<&'a T> and does not require a ToOwned implementation. While this can be nice for API's mainly consuming T's not implementing ToOwned or implementing ToOwned through Clone it also means it's borrowed version of String is &String and not &str making it less performant for cases like String or Vec.

Documentation can be viewed on docs.rs.

Example

Take a look at the examples dir and the documentation for more complete examples.

The main benefit of MaybeOwned over Cow is for API design, allowing API consumer to pass in both T and &'a T:

```rust

//... in a trait implementation fn register(&mut self, key: SomeId, data: D) where D: Into> { self.map.entry(key).orinsertwith(||data.into()); } //...

//... in usage // use owned data registry.register(id1, dataowned); // use a reference to the data registry.register(id2, &dataref); // it ok to use the same reference again registry.register(id3, &data_ref); //... ```

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.