Sean Hagstrom seanstrom

Engineer | Designer | Researcher | Programmer | Musician

seanstrom / example.js

Last active August 29, 2015 14:13

Async JS/Node - Using Promise Example

	var endpoint = 'my/endpoint'
	var dataPromise = getData(endpoint)

	dataPromise.then(function(data) {
	console.log(data)
	}, function(error) {
	console.error(error)
	})

seanstrom / example.js

Created January 20, 2015 16:19

Async JS/Node - Create Promise Example

	var http = require('special-http')

	function getData(endpoint) {
	var promise = new Promise(function(resolver, rejector) {
	http.get(endpoint).then(function(data) {
	resolver(data)
	}, function(err) {
	rejector(err)
	})
	})

seanstrom / example.js

Last active August 29, 2015 14:13

Async JS/Node - Parallel Async.js Example - Part 2

	// Part 2

	var username = 'seanghagstrom'

	getTweetsPostsRepos(username, function(err, tweetsPostsRepos) {
	if(err) {
	console.error(err)
	} else {
	console.log(username + ' has this stuff ' + tweetsPostsRepos)
	}

seanstrom / example.js

Created January 20, 2015 06:26

Async JS/Node - Parallel Async.js Example - Part 1

	// Part 1

	function getTweetsPostsRepos(username, mainCallback) {
	async.parallel([
	function(callback) {
	getTweets(username, callback)
	},
	function(callback) {
	getPosts(username, callback)
	},

seanstrom / example.js

Created January 20, 2015 06:09

Async JS/Node - Sequential Async.js Example - Part 2

	// Part 2

	var username = 'seanghagstrom'

	findLikesForPostsByUsername(username, function(err, totalLikes) {
	if(err) {
	console.error(err)
	} else {
	console.log(username + ' total number of likes: ' + totalLikes)
	}

seanstrom / example.js

Created January 20, 2015 06:08

Async JS/Node - Sequential Async.js Example - Part 1

	// Part 1

	function findLikesForPostsByUsername(username, mainCallback) {
	async.waterfall([
	function(callback) {
	findUserByUserName(username, callback)
	},
	function(user, callback) {
	findPostsByUser(user, callback)
	},

seanstrom / example.js

Created January 20, 2015 05:53

Async JS/Node - Parallel Callbacks Example - Part 3

	// Part 3

	var username = 'seanghagstrom'

	getTweetsPostsRepos(username, function(err, tweetsPostsRepos) {
	if(err) {
	console.error(err)
	} else {
	console.log(username + ' has this stuff ' + tweetsPostsRepos)
	}

seanstrom / example.js

Created January 20, 2015 05:52

Async JS/Node - Parallel Callbacks Example - Part 2

	// Part 2

	function getTweetsPostsRepos(username, callback) {
	// counter

	getTweets(username, function(err, results) {
	if(err) return callback(err)

	somethingFinished(null, results)
	})

seanstrom / example.js

Created January 20, 2015 05:50

Async JS/Node - Parallel Callbacks Example - Part 1

	// Part 1

	function getTweetsPostsRepos(username, callback) {
	var count = 0
	, results = []

	function somethingFinished(err, result) {
	count += 1
	results.push(result)

seanstrom / example.js

Last active August 29, 2015 14:13

Async JS/Node - Sequential Callbacks Example - Part 2

	// Part 2

	var username = 'seanghagstrom'

	findLikesForPostsByUsername(username, function(err, totalLikes) {
	if(err) {
	console.error(err)
	} else {
	console.log(username + ' total number of likes: ' + totalLikes)
	}