# Error Into Extension traits for [`core::convert::Into`](https://doc.rust-lang.org/core/convert/trait.Into.html) that allow `Result` and `Option` to convert their contained values inline. ## Usage Import the traits and you are done: ```rust use err_into::*; // use err_into::MapInto; // .map(Into::into) -> .map_into() // use err_into::ErrorInto; // .map_err(Into::into) -> .err_into() // use err_into::ResultInto; // .map(Into::into).map_err(Into::into) -> .res_into() ``` Look at the [documentation](https://docs.rs/err-into/latest/err-into) for more information.