https://github.com/avinashcodes/callbag-flat-map

https://github.com/avinashcodes/callbag-flat-map

Last synced: 3 months ago
JSON representation

• Host: GitHub
• URL: https://github.com/avinashcodes/callbag-flat-map
• Owner: avinashcodes
• License: mit
• Created: 2018-03-12T16:30:46.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2020-03-09T01:12:19.000Z (almost 5 years ago)
• Last Synced: 2024-08-11T00:29:21.596Z (5 months ago)
• Language: JavaScript
• Size: 9.77 KB
• Stars: 5
• Watchers: 1
• Forks: 3
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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• awesome-callbags - flat-map

README

        
# callbag-flat-map 👜

A callbag operator that creates and flates to the new source whenever original source emits

`npm install callbag-flat-map`

## Usage:

Pullable Source

```js

const pipe = require('callbag-pipe');

const flatMap = require('callbag-flat-map');

const fromIter = require('callbag-from-iter');

const forEach = require('callbag-for-each');

console.log('Pullable source');

pipe(

  fromIter('hi'),

  flatMap(char => fromIter([10, 20, 30]), (char,num) => char + num),

  forEach(x => console.log(x))

);

// Pullable source

// h10

// h20

// h30

// i10

// i20

// i30

```

Listenable Source

```js

const pipe = require('callbag-pipe');

const flatMap = require('callbag-flat-map');

const interval = require('callbag-interval');

const forEach = require('callbag-for-each');

const fromPromise = require('callbag-from-promise');

const fakeAjax = value => new Promise((resolve, reject) => {

	let period = value % 2 ? 400 : 1200; // Resolve odd numbers quickly

	setTimeout(resolve, period, (value*value));

});

console.log('Listenable source');

pipe(

  interval(500),

  flatMap(i => fromPromise(fakeAjax(i))),

  forEach(x => console.log(x))

);

// Listenable source

// 1

// 0

// 9

// 4

// 25

// 16

// 49

// 36

// ....

```