# Summary

- [failure](./intro.md)
- [How to use failure](./howto.md)
    - [The Fail trait](./fail.md)
    - [Deriving Fail](./derive-fail.md)
    - [The Error type](./error.md)
    - [`bail!` and `ensure!`](./bail-and-ensure.md)
- [Patterns & Guidance](./guidance.md)
    - [Strings as errors](./error-msg.md)
    - [A Custom Fail type](./custom-fail.md)
    - [Using the Error type](./use-error.md)
    - [An Error and ErrorKind pair](./error-errorkind.md)
    - [Strings and custom fail type](./string-custom-error.md)