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Either
======
The enum ``Either`` with variants ``Left`` and ``Right`` and trait
implementations including Iterator, Read, Write.
Either has methods that are similar to Option and Result.
Includes convenience macros ``try_left!()`` and ``try_right!()`` to use for
short-circuiting logic.
Please read the `API documentation here`__
__ https://docs.rs/either/
|build_status|_ |crates|_
.. |build_status| image:: https://travis-ci.org/bluss/either.svg?branch=master
.. _build_status: https://travis-ci.org/bluss/either
.. |crates| image:: http://meritbadge.herokuapp.com/either
.. _crates: https://crates.io/crates/either
How to use with cargo::
[dependencies]
either = "1.6"
Recent Changes
--------------
- 1.6.1
- Add new methods ``.expect_left()``, ``.unwrap_left()``,
and equivalents on the right, by @spenserblack (#51)
- 1.6.0
- Add new modules ``serde_untagged`` and ``serde_untagged_optional`` to customize
how ``Either`` fields are serialized in other types, by @MikailBag (#49)
- 1.5.3
- Add new method ``.map()`` for ``Either<T, T>`` by @nvzqz (#40).
- 1.5.2
- Add new methods ``.left_or()``, ``.left_or_default()``, ``.left_or_else()``,
and equivalents on the right, by @DCjanus (#36)
- 1.5.1
- Add ``AsRef`` and ``AsMut`` implementations for common unsized types:
``str``, ``[T]``, ``CStr``, ``OsStr``, and ``Path``, by @mexus (#29)
- 1.5.0
- Add new methods ``.factor_first()``, ``.factor_second()`` and ``.into_inner()``
by @mathstuf (#19)
- 1.4.0
- Add inherent method ``.into_iter()`` by @cuviper (#12)
- 1.3.0
- Add opt-in serde support by @hcpl
- 1.2.0
- Add method ``.either_with()`` by @Twey (#13)
- 1.1.0
- Add methods ``left_and_then``, ``right_and_then`` by @rampantmonkey
- Include license files in the repository and released crate
- 1.0.3
- Add crate categories
- 1.0.2
- Forward more ``Iterator`` methods
- Implement ``Extend`` for ``Either<L, R>`` if ``L, R`` do.
- 1.0.1
- Fix ``Iterator`` impl for ``Either`` to forward ``.fold()``.
- 1.0.0
- Add default crate feature ``use_std`` so that you can opt out of linking to
std.
- 0.1.7
- Add methods ``.map_left()``, ``.map_right()`` and ``.either()``.
- Add more documentation
- 0.1.3
- Implement Display, Error
- 0.1.2
- Add macros ``try_left!`` and ``try_right!``.
- 0.1.1
- Implement Deref, DerefMut
- 0.1.0
- Initial release
- Support Iterator, Read, Write
License
-------
Dual-licensed to be compatible with the Rust project.
Licensed under the Apache License, Version 2.0
http://www.apache.org/licenses/LICENSE-2.0 or the MIT license
http://opensource.org/licenses/MIT, at your
option. This file may not be copied, modified, or distributed
except according to those terms.
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