https://github.com/callumjhays/elm-unwrap

Dangerously unwrap value wrapper types in Elm
https://github.com/callumjhays/elm-unwrap

elm elm-lang helpers monads unwrap

Last synced: 26 days ago
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Dangerously unwrap value wrapper types in Elm

• Host: GitHub
• URL: https://github.com/callumjhays/elm-unwrap
• Owner: CallumJHays
• License: mit
• Created: 2017-04-27T16:03:17.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-04-27T19:13:02.000Z (over 7 years ago)
• Last Synced: 2024-11-24T19:46:18.975Z (about 1 month ago)
• Topics: elm, elm-lang, helpers, monads, unwrap
• Language: Elm
• Homepage: http://package.elm-lang.org/packages/CallumJHays/elm-unwrap/latest
• Size: 4.88 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# `elm-unwrap`

This library provides quick functions for uunwrapping value wrapper

types such as Maybe and Result types. I have found myself rewriting this time

and time again, so I thought to separate it out into a package.

Only use these if the program SHOULD crash in the case of the value not being

present.

# Installation

```bash

elm package install CallumJHays/elm-unwrap

```

# Functions

## `Unwrap.maybe : Maybe val -> val`

Forcibly unwraps a maybe. Crash the program when it is Nothing.

```elm

Unwrap.maybe (Just 42) == 42

Unwrap.maybe Nothing -- CRASHES

```

## `Unwrap.result : Result err val -> val`

Forcibly unwraps a result. Crash the program when it is Err.

```elm

Unwrap.result (Ok 42) == 42

Unwrap.result (Err "Should never happen") -- CRASHES

```