https://github.com/danilosampaio/outersections

It Calculates “Outersections” of ranges.
https://github.com/danilosampaio/outersections

intersection ranges set-theory

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It Calculates “Outersections” of ranges.

• Host: GitHub
• URL: https://github.com/danilosampaio/outersections
• Owner: danilosampaio
• License: mit
• Created: 2017-04-26T02:21:42.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2017-05-06T01:09:48.000Z (over 7 years ago)
• Last Synced: 2024-10-12T09:12:48.846Z (2 months ago)
• Topics: intersection, ranges, set-theory
• Language: JavaScript
• Size: 9.77 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md
  • License: license

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README

        
# outersections [![Build Status](https://travis-ci.org/danilosampaio/outersections.svg?branch=master)](https://travis-ci.org/danilosampaio/outersections) [![Coverage Status](https://coveralls.io/repos/github/danilosampaio/outersections/badge.svg?branch=master)](https://coveralls.io/github/danilosampaio/outersections?branch=master)

> It Calculates “Outersections” of ranges.

Given a list of ranges:

![Ranges](/outersection.png?raw=true "Ranges")

it calculates the "Outersection" intervals (Hatched area, with no intersections between the A,B,C date ranges).

[Stackoverflow discussion](http://stackoverflow.com/questions/43592891/how-to-calculate-outersections-from-sets-of-date-range)

## Install

```

$ npm install --save outersections

```

## Usage

```js

const outersections = require('outersections');

let ranges = [

	{begin: new Date(2017, 0, 1), end: new Date(2017, 0, 10)},

	{begin: new Date(2017, 0, 20), end: new Date(2017, 0, 30)},

	{begin: new Date(2017, 0, 1), end: new Date(2017, 0, 7)},

	{begin: new Date(2017, 0, 25), end: new Date(2017, 1, 5)}

];

outersections(ranges);

//=> [{ begin: Date(2017, 0, 10), end: Date(2017, 0, 20) }]

const ranges = [

	{begin: 1, end: 10},

	{begin: 20, end: 30},

	{begin: 1, end: 7},

	{begin: 25, end: 35}

];

outersections(ranges);

//=> [{begin: 10, end: 20}]

```

## API

### outersections(ranges)

#### input

Type: `Array`

Array of ranges

## License

MIT © [Danilo Sampaio](http://github.com/danilosampaio)