Links for either
either-0.2.tar.gz
either-0.1.tar.gz
0.1 home_page
0.2 home_page
http://www.apache.org/licenses/LICENSE-2.0
http://www.scala-lang.org/api/current/scala/Either.html
http://www.scala-lang.org/api/current/scala/Option.html
http://www.haskell.org/ghc/docs/latest/html/libraries/base/Data-Maybe.html
https://github.com/kennknowles
http://www.haskell.org/ghc/docs/latest/html/libraries/base/Data-Either.html
http://code.activestate.com/recipes/577248-maybe-pattern/
http://dlang.org/phobos/std_variant.html
https://github.com/npryce/maybe-java
https://github.com/bhb/maybe
https://github.com/kennknowles/python-either
http://en.wikipedia.org/wiki/Tagged_union
http://www.boost.org/doc/libs/1_50_0/doc/html/variant.html
https://twitter.com/KennKnowles