Miguel Bermudez miguelbermudez

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

Docker quick start for Node.js developers

Install Dependencies

Install Docker Toolbox

For Mac and Windows users, just install Docker Toolbox. It provides what you need to get started, including:

Reposted from Qiita

For almost a year now, I've been using this "flux" architecture to organize my React applications and to work on other people's projects, and its popularity has grown quite a lot, to the point where it shows up on job listings for React and a lot of people get confused about what it is.

Why I'm tired of using and teaching flux

There are a billion explainations on the internet, so I'll skip explaining the parts. Instead, let's cut to the chase -- the main parts I hate about flux are the Dispatcher and the Store's own updating mechanism.

If you use a setup similar to the examples in facebook/flux, and you use flux.Dispatcher, you probably have this kind of flow:

Hi Nicholas,

I saw you tweet about JSX yesterday. It seemed like the discussion devolved pretty quickly but I wanted to share our experience over the last year. I understand your concerns. I've made similar remarks about JSX. When we started using it Planning Center, I led the charge to write React without it. I don't imagine I'd have much to say that you haven't considered but, if it's helpful, here's a pattern that changed my opinion:

The idea that "React is the V in MVC" is disingenuous. It's a good pitch but, for many of us, it feels like in invitation to repeat our history of coupled views. In practice, React is the V and the C. Dan Abramov describes the division as Smart and Dumb Components. At our office, we call them stateless and container components (view-controllers if we're Flux). The idea is pretty simple: components can't

	; Learn Datalog Today (http://www.learndatalogtoday.org) is a great resource for
	; reading but its interactive query interface is broken. Below is how we can
	; load the same data into a Clojure REPL and play with it using DataScript.
	; After running the code below, many/most/all? of the queries on Learn Datalog
	; Today should be functional.
	;
	; Create a new lein project, add `[datascript "0.15.0"]` to `project.clj`'s
	; `dependencies`, run `lein deps && lein repl` and copy-paste the following in
	; chunks, inspecting the outputs as needed.

	;; Credits:
	;;
	;; * ClojureScript
	;; * Reagent https://reagent-project.github.io/
	;; * Figwheel https://github.com/bhauman/lein-figwheel
	;; * core.async https://clojure.github.io/core.async/
	;; * Christophe Grand's Life implementation http://clj-me.cgrand.net/2011/08/19/conways-game-of-life/

	(ns life.core
	(:require [reagent.core :as r]

	CLJ_NREPL_PORT:=22340
	FIGWHEEL_PORT:=22345

	CLJS_JAR_VERSION:=1.7.48
	CLJS_JAR_URL:=https://github.com/clojure/clojurescript/releases/download/r$(CLJS_JAR_VERSION)/cljs.jar

	.PHONY: def_target

	def_target : null

	##################
	# Privacy Settings
	##################

	# Privacy: Let apps use my advertising ID: Disable
	Set-ItemProperty -Path HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\AdvertisingInfo -Name Enabled -Type DWord -Value 0
	# To Restore:
	#Set-ItemProperty -Path HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\AdvertisingInfo -Name Enabled -Type DWord -Value 1
	# Privacy: SmartScreen Filter for Store Apps: Disable
	Set-ItemProperty -Path HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\AppHost -Name EnableWebContentEvaluation -Type DWord -Value 0

	;; Gamma (shader-generation): https://github.com/kovasb/gamma
	;; Gamma Driver (WebGL resource management, aka "Om for WebGL"): https://github.com/kovasb/gamma-driver
	;; Gamma examples: https://github.com/kovasb/gamma-examples

	(ns gampg.learn-gamma.lesson-01
	(:require [clojure.string :as s]
	[gamma.api :as g]
	[gamma.program :as p]
	[gamma.tools :as gt]
	[gamma-driver.drivers.basic :as driver]

	//Based on gulpfile.js from Google Web Starter Kit.
	//https://github.com/google/web-starter-kit
	'use strict';

	// Include Gulp & Tools We'll Use
	var gulp = require('gulp');
	var $ = require('gulp-load-plugins')();
	var del = require('del');
	var runSequence = require('run-sequence');
	var browserSync = require('browser-sync');