Diego Zacarías V. zv3

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

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

Setup `php-mcrypt` on macOS (and versions of Mac OS X)

These steps should have been mentioned in the prerequisites of the Laravel Installation Guide, since I'm surely not the only person trying to get Laravel running on macOS.

Install

Install Mcrypt using Homebrew and PECL (comes with PHP)

# PHP 7.3

	import invariant from "tiny-invariant";

	class AmalgoBox extends HTMLElement {
	get input() {
	return this.querySelector("input") as HTMLInputElement;
	}

	get button() {
	return this.querySelector("button") as HTMLButtonElement;
	}

	const https = require('https')

	const HOST = "";
	const PATH = ""
	const TOKEN = ""

	const RATE_LMIT = 10;
	const RATE_INTERVAL = 1000; //ms

	const post = (phone, code) => new Promise((resolve, reject) => {

	In Application.scala:

	object MyServer extends AutowirePlayServer[Api] {
	override def routes(target: Api) = route[Api](target)
	override def createImpl(autowireContext: AutowireContext): Api = new ServerImpl(autowireContext)
	}

	object Application extends Controller {
	def api = PlayAutowire.api(MyServer)_
	}

	package controllers

	import play.api.http.{ContentTypes, ContentTypeOf}
	import upickle.Js
	import upickle.default._
	import play.api.mvc._

	import scala.concurrent.Future
	import scala.concurrent.ExecutionContext.Implicits.global

	<?php

	// Based on <https://github.com/mecha-cms/x.minify>

	namespace x\minify\_ { // start namespace

	$n = __NAMESPACE__;

	\define($n . "\\token_boolean", '\b(?:true\|false)\b');
	\define($n . "\\token_number", '-?(?:(?:\d+)?\.)?\d+');

	// Gulp 4
	var gulp = require('gulp');
	var using = require('gulp-using');
	var grep = require('gulp-grep');
	var changed = require('gulp-changed');
	var del = require('del');
	var coffee = require('gulp-coffee');
	var less = require('gulp-less');
	var coffeelint = require('gulp-coffeelint');
	var sourcemaps = require('gulp-sourcemaps');