Stefano Pigozzi pigoz

Applied Functional Programming with Scala - Notes

1. Mastering Functions

A function is a mapping from one set, called a domain, to another set, called the codomain. A function associates every element in the domain with exactly one element in the codomain. In Scala, both domain and codomain are types.

val square : Int => Int = x => x * x

youtube-dl hook script for mpv

Now part of mpv

As of 079ecd7 (2014-11-19), the hook script is now integrated into mpv and will be avaiblable when compiled with LUA support. It is (currently) disabled by default, to enable it add --ytdl=yes to your command-line or ytdl=yes to your mpv.conf.

Open Issues

automatic selection of ASS subformat (rg3/youtube-dl#4019)
youtube-dl may get stuck on direct URLs to less popular file types (m2ts) (rg3/youtube-dl#4149)

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

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.

	// getComponent is a function that returns a promise for a component
	// It will not be called until the first mount
	function asyncComponent(getComponent) {
	return class AsyncComponent extends React.Component {
	static Component = null;
	state = { Component: AsyncComponent.Component };

	componentWillMount() {
	if (!this.state.Component) {
	getComponent().then(Component => {

	require 'socket'
	require 'openssl'
	require 'puma/server'
	require 'ds9'

	class Server < DS9::Server
	def initialize socket, app
	@app = app
	@read_streams = {}
	@write_streams = {}

	# Thanks to commenters for providing the base of this much nicer implementation!
	# Save and run with $ python 0dedict.py
	# You may need to hunt down the dictionary files yourself and change the awful path string below.
	# This works for me on MacOS 10.14 Mohave

	from struct import unpack
	from zlib import decompress
	import re
	filename = '/System/Library/Assets/com_apple_MobileAsset_DictionaryServices_dictionaryOSX/9f5862030e8f00af171924ebbc23ebfd6e91af78.asset/AssetData/Oxford Dictionary of English.dictionary/Contents/Resources/Body.data'
	f = open(filename, 'rb')

	/* bling.js */
	window.$ = document.querySelector.bind(document);
	window.$$ = document.querySelectorAll.bind(document);
	Node.prototype.on = window.on = function(name, fn) { this.addEventListener(name, fn); };
	NodeList.prototype.__proto__ = Array.prototype;
	NodeList.prototype.on = function(name, fn) { this.forEach((elem) => elem.on(name, fn)); };

	/**
	* This software is in the public domain. Where that dedication is not recognized,
	* you are granted a perpetual, irrevokable license to copy and modify this file
	* as you see fit.
	*
	* Requires SDL 2.0.4.
	* Devices that do not support Metal are not handled currently.
	**/

	#import <UIKit/UIKit.h>

	source 'https://rubygems.org'

	gem 'rake'
	gem 'lotus-router'
	gem 'lotus-controller'
	gem 'lotus-view'

	group :test do
	gem 'rspec'
	gem 'capybara'