tweinfeld’s gists

tweinfeld / iterable_transformer.js

Last active March 25, 2017 22:53

Transforms Iterables

	// Here's a generic transformer helper function
	const transform = (function(EMPTY) {
	const transform = function*(iterable, trasformers) {
	for (let res of iterable) {
	for (let i = 0; i < trasformers.length && res !== EMPTY; i++) {
	res = trasformers[i](res);
	};

	if (res !== EMPTY) yield res;
	}

tweinfeld / repeat_promise.js

Last active April 5, 2017 02:23

Repeat a promise-generating function until resolution

	function repeatPromise(func, attempts = 10, delay = 1000) {
	let attemptNumber = 0;
	return (function internalTry() {
	attemptNumber++;
	if (attemptNumber > attempts) {
	return Promise.reject('Number of attempts exceeded');
	} else {
	return func().catch(() => new Promise((resolve) => setTimeout(resolve, delay)).then(internalTry));
	}
	})();

tweinfeld / merge_m3u8.js

Created May 27, 2017 20:50

Merge Multiple M3U8 Manifests

	let
	_ = require('lodash'),
	kefir = require('kefir'),
	request = require('request'),
	url = require('url'),
	express = require('express');

	let videoSourcesProperty = kefir
	.combine([
	"https://player.vimeo.com/external/217157675.m3u8?s=4a0c6e0d89f1d443259dc8848866a8b7262ac31e",

tweinfeld / stateful_routing.html

Created January 3, 2018 16:59

An example of utilizing HTML5's History API in order to save and restore state. Whenever the state changes, a copy of it is stored in History whether it effected the URL route or not. It comes to demonstrate the somewhat concealed benefits of the History API.

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<script src="https://unpkg.com/[email protected]/dist/kefir.min.js"></script>
	<script src="https://unpkg.com/[email protected]/lodash.min.js"></script>
	<script src="https://unpkg.com/[email protected]/umd/react.development.js"></script>
	<script src="https://unpkg.com/[email protected]/umd/react-dom.development.js"></script>
	</head>
	<body>

tweinfeld / mini_miner.js

Last active April 9, 2018 07:29

A short Stratum client for mining BTCs

	const
	_ = require('lodash'),
	kefir = require('kefir'),
	net = require('net'),
	https = require('https'),
	bigInt = require('big-integer'),
	{ createHash } = require('crypto');

	const
	LOGGLY_API_KEY = "b8d2377d-63d8-4f4c-ae07-fb05bb999b3c",

tweinfeld / wix_dep_less_amd_loader.js

Last active April 9, 2018 07:39

	import { fetch } from 'wix-fetch';

	const requireAMD = function (url) {
	return fetch(url)
	.then((res) => res.text())
	.then((code) => {
	return new Promise((resolve, reject) => {
	(new Function("define", code))(
	(function () {
	let define = (...args) => {

tweinfeld / template.html

Last active December 1, 2021 10:36

Browser Application Template (Lodash + Kefir + React)

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>Title</title>
	<script src="https://cdn.jsdelivr.net/npm/[email protected]/lodash.min.js"></script>
	<script src="https://cdn.jsdelivr.net/g/lodash@4(lodash.min.js+lodash.fp.min.js)"></script>
	<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/kefir.min.js"></script>
	<script src="https://unpkg.com/react@17/umd/react.development.js" crossorigin></script>
	<script src="https://unpkg.com/react-dom@17/umd/react-dom.development.js" crossorigin></script>

tweinfeld / fetch_stream.html

Created August 17, 2019 17:00

Read a JSONL file over chunked response stream over Kefir

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<script src="https://cdn.jsdelivr.net/npm/[email protected]/lodash.min.js"></script>
	<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/kefir.min.js"></script>
	</head>
	<body>
	<script>
	Kefir

tweinfeld / custom_element_function.js

Last active December 12, 2020 18:33

	const createCustomElement = function(generator, attributes = []){
	const
	BUS = Symbol('bus'),
	Element = class extends HTMLElement {
	constructor(props) {
	super(props);
	const
	instance = Reflect.construct(HTMLElement, [], this.constructor),
	emitter = (function(){
	const eventMap = new Map();

Tal Weinfeld tweinfeld