https://github.com/rolangom/rolads

Monads implementation by @rolangom
https://github.com/rolangom/rolads

functional functional-js functional-programming javascript javascript-library node-js

Last synced: 7 days ago
JSON representation

Monads implementation by @rolangom

• Host: GitHub
• URL: https://github.com/rolangom/rolads
• Owner: rolangom
• License: mit
• Created: 2018-03-29T00:21:39.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2018-03-30T15:19:36.000Z (almost 7 years ago)
• Last Synced: 2024-11-11T18:11:59.981Z (2 months ago)
• Topics: functional, functional-js, functional-programming, javascript, javascript-library, node-js
• Language: JavaScript
• Size: 6.84 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# rolads

Monads implementation by @rolangom: Option (Some and None) and Either (Left and Right).

```javascript

const { Left, match, None, Right, Some, Either } = require('./index');

const eitherL1 = Left.of('Error');

const eitherR1 = Right.of('Success');

console.log('results1 of Left should be "Error".');

const results1 = match({ left: value => value, right: value => value }, eitherL1);

console.assert(results1 === 'Error', 'Result of Left should be "Error".');

console.log('results2 should be "Success".');

const results2 = match({ left: value => value, right: value => value }, eitherR1);

console.assert(results2 === 'Success', 'Result of Right should be "Success".');

const optionS1 = Some.of(1);

const optionN1 = None;

console.log('Result of Some should be 1.');

const result3 = match({ some: val => val, none: () => 0 }, optionS1);

console.assert(result3 === 1, 'Result of Some should be 1.');

console.log('result5 should be 0.');

const result4 = match({ some: val => val, none: () => 0 }, optionN1);

console.assert(result4 === 0, 'Result of None should be 0.');

```

Inspired on 'https://drboolean.gitbooks.io/mostly-adequate-guide-old/content/', https://github.com/origamitower/folktale and others.