https://github.com/jimmyhmiller/multiple-methods

A micro library that implements multi methods in javascript.
https://github.com/jimmyhmiller/multiple-methods

Last synced: about 1 month ago
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A micro library that implements multi methods in javascript.

• Host: GitHub
• URL: https://github.com/jimmyhmiller/multiple-methods
• Owner: jimmyhmiller
• License: mit
• Created: 2015-09-23T05:30:20.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2019-01-31T00:49:07.000Z (almost 6 years ago)
• Last Synced: 2024-10-10T15:11:31.278Z (about 1 month ago)
• Language: JavaScript
• Size: 57.6 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

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README

        
# Multiple-methods

Multiple-methods is a micro library that implements multi methods in javascript. This allows you to do things like the following:

```javascript

var multi = require('multiple-methods');

var area = multi(_.property('shape'));

area.defaultMethod(() => 0);

area.method('circle', (s) => Math.PI * Math.pow(s.radius,2));

area.method('square', (s) => Math.pow(s.side, 2));

area({shape:'circle', radius: 1});

// 3.141592653589793

area({shape:'square', side: 4});

// 16

area({shape:'nothing'});

// 0

```

This library is incredibly small, so you should feel free to read the source. In fact you have seen everything that the library can do above. It only has one entry point "multi". Which has two properties, method and defaultMethod. It doesn't implement clojure style instance checking, although it would be easy to do yourself with it.

## Install

    npm install --save multiple-methods

If you find any bugs feel free to file and issue or put in a PR.