thurt’s gists

thurt / gist:716f3bdbd9cf58ecef99

Created February 13, 2016 22:06

// http://jsperf.com/events-object-compare-vs-string-compare/2

thurt / generateUUID.js

Created February 17, 2016 22:55

Client-side UUID Generator

	function generateUUID() {
	var d = new Date().getTime()
	if (window.performance && typeof window.performance.now === "function") {
	d += window.performance.now() //use high-precision timer if available
	}
	var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
	var r = (d + Math.random() * 16) % 16 \| 0
	d = Math.floor(d / 16)
	return (c == 'x' ? r : (r & 0x3 \| 0x8)).toString(16)
	})

thurt / bind-vs-call-or-apply.js

Last active February 27, 2016 16:47

bind vs call or apply

	<script>
	Benchmark.prototype.setup = function() {
	var emptyFn = function(str, num) {}
	var str = 'test string'
	var num = 1

	var preBoundFn = emptyFn.bind(null, str, num)
	};

	Benchmark.prototype.teardown = function() {

thurt / es5_Set.js

Created March 17, 2016 19:01


	// approximate implementation of Set using Symbol (ES6)
	(() => {
	function aSet() {
	this.hash = {}
	}
	aSet.prototype = {
	add(a) { this.hash[a] = true },
	has(a) { return a in this.hash },
	values() { return Object.keys(this.hash) },

thurt / immutable_counter.js

Last active April 3, 2016 23:27

an example of how to implement an immutable counter

	(() => {
	class Counter {
	constructor(start_value) {
	this.plus = this.plus(start_value)
	}

	plusFn(num, _num) {
	var res = num + _num
	this.plus = (_num) => {
	return this.plusFn(res, _num)

thurt / filter_stream_example.js

Created April 7, 2016 20:17

filter a stream of objects by their key property

	var Stream = require('stream.js') // https://github.com/dionyziz/stream.js

	var myStream = Stream.make({
	key:'please'
	}, {
	key: 'filter'
	}, {
	key: 'this'
	}, {
	key: 'data'

thurt / example-binary-tree-iterator.js

Last active April 10, 2016 17:29

	(() => {
	class BinaryTree {
	constructor(value, left = null, right = null) {
	this.value = value
	this.left = left
	this.right = right
	}

	[Symbol.iterator]() {
	var tree = [this.value, this.left, this.right]

thurt / objectEntries.js

Last active May 8, 2016 05:11

Implementation for Object.entries

	// Alt 1
	Object.prototype.entries = function() {
	let keys = Reflect.ownKeys(this).values()

	return {
	[Symbol.iterator]() {
	return this
	},
	next: () => {
	let { done, value: key } = keys.next()

thurt / generic_pipe_compose.js

Last active May 8, 2016 23:50

Example usage of a generic pipe and compose

	var trace = x => {
	console.log(x)
	return x
	}
	var plus1 = x => x + 1
	var add2 = (x, y) => x + y
	var addList = list => list.reduce(add2, 0)
	var concat2 = (x, y) => x.concat(y)
	var concatLists = (...lists) => lists.reduce(concat2, [])

thurt / DataBind.js

Created May 7, 2016 17:13

A quick one-way data binder which will change the textContent of the nodes which have a data-key attribute when calling DataBind function

	// gets all html elements with data-key attribute and stores them in a dictonary.
	// later, using DataBind function triggers a setter function for that key
	// which applies the assigned value to the associated node.textContent
	var DataBind = (() => {
	// private member
	var _binder = Array.from(document.querySelectorAll('[data-key]'))
	.reduce((dict, node) => {
	Object.defineProperty(dict, node.dataset.key, {
	set(new_value) {
	// node is in the closure

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