Irakli Safareli safareli

The introduction to Reactive Programming you've been missing

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Get Homebrew installed on your mac if you don't already have it

Install highlight. "brew install highlight". (This brings down Lua and Boost as well)

	class GetLabelType (rl ∷ RowList) (s ∷ Symbol) (a ∷ Type) \| rl s → a where
	labelType ∷ RLProxy rl → SProxy s → Proxy a

	instance getLabelTypeFound ∷ GetLabelType (Cons s a tail) s a where
	labelType _ _ = Proxy
	else instance getLabelTypeNotFound ∷ GetLabelType (Cons s a tail) s Void where
	labelType _ _ = Proxy
	else instance getLabelTypeInd ∷ GetLabelType tail ss b ⇒ GetLabelType (Cons s a tail) ss b where
	labelType _ _ = labelType (RLProxy ∷ RLProxy tail) (SProxy ∷ SProxy ss)
	else instance getLabelTypeVoid ∷ GetLabelType Nil s Void where

	/*
	* `match` is a helper function for writing pattern matches on types that are
	* implemented using Scott encoding.
	*
	* @flow
	*/

	export function match<A,B>(matcher: A): (match: (matcher: A) => B) => B {
	return match => match(matcher)
	}

	const daggy = require('daggy');
	const {foldMap} = require('pointfree-fantasy')
	const {concat, toUpper, prop, identity, range, compose} = require('ramda');

	// Contravariant functors usually have this shape F(a -> ConcreteType).
	// In other words, some type holding a function which is parametric on its input, but not output.
	// They don't always have that shape, but it's a good intuition
	// Covariant functors are what we're used to, which are parametric in their output
	//================================================================

	// NOTE: I previously suggested doing this through Grunt, but had plenty of problems with
	// my set up. Grunt did some weird things with scope, and I ended up using nodemon. This
	// setup is now using Gulp. It works exactly how I expect it to and is WAY more concise.
	var gulp = require('gulp'),
	spawn = require('child_process').spawn,
	node;

	/**
	* $ gulp server
	* description: launch the server. If there's a server already running, kill it.

	function fbShare(url, title, descr, image, winWidth, winHeight) {
	var winTop = (screen.height / 2) - (winHeight / 2);
	var winLeft = (screen.width / 2) - (winWidth / 2);
	window.open('http://www.facebook.com/sharer.php?s=100&p[title]=' + title + '&p[summary]=' + descr + '&p[url]=' + url + '&p[images][0]=' + image, 'sharer', 'top=' + winTop + ',left=' + winLeft + ',toolbar=0,status=0,width=' + winWidth + ',height=' + winHeight);
	}

	#!/bin/bash

	#take a configurable service from first argument
	if [ $# = 1 ]
	then
	SERVICE_NAME=$1
	fi

	#otherwise get the active one
	if [ $# = 0 ]

	# Parses YouTube URLs directly or from iframe code. Handles:
	# * Address bar on YouTube url (ex: http://www.youtube.com/watch?v=ZFqlHhCNBOI)
	# * Direct http://youtu.be/ url (ex: http://youtu.be/ZFqlHhCNBOI)
	# * Full iframe embed code (ex: <iframe src="http://www.youtube.com/embed/ZFqlHhCNBOI">)
	# * Old <object> tag embed code (ex: <object><param name="movie" value="http://www.youtube.com/v/ZFqlHhCNBOI">...)

	/(youtu\.be\/\|youtube\.com\/(watch\?(.*&)?v=\|(embed\|v)\/))([^\?&"'>]+)/
	$5 #=> the video ID

	# test it on Rubular: http://rubular.com/r/eaJeSMkJvo