https://github.com/davidboers/elmeither

Implements the Either declaration in Elm.
https://github.com/davidboers/elmeither

either elm functional-programming package

Last synced: about 5 hours ago
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Implements the Either declaration in Elm.

• Host: GitHub
• URL: https://github.com/davidboers/elmeither
• Owner: davidboers
• License: bsd-3-clause
• Created: 2021-05-06T20:55:29.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2021-05-07T19:06:27.000Z (over 3 years ago)
• Last Synced: 2023-08-08T20:39:29.992Z (over 1 year ago)
• Topics: either, elm, functional-programming, package
• Language: Elm
• Homepage:
• Size: 8.79 KB
• Stars: 0
• Watchers: 1
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Either Elm

The first time I tried Functional Programming, I thought "What the hell is this? Why would anybody program this way?" Then, I tried it out a little more. Then I realized how fun it is. Particularly the genius that comes with having to be resourceful. In no instance is that clearer than Haskell's `Maybe` and `Either` declarations.

```Haskell

-- Basically a nullable value. It could exist (as any type) or it could be Nothing. 

-- Akin to Java's '@nullable' annotation

type Maybe a

    = Just a

    | Nothing

-- Could be of type a or type b.

type Either a b

    = Left a

    | Right b

```

Although `Maybe` is implemented in Elm, `Either` is not; until now. This module contains a declaration of Haskell's `Either` type, verbatim from the source code of the GHC library. It also contains a couple of other functions related to the declaration.

Just do

```

elm install kingwither/elmeither

```

and the package will be installed!

```Elm

import Either exposing (Either(..))

```

You're all set! `Either` is now `Either Haskell Elm`!