jhrr

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.

Element

Box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
elem.clientLeft, elem.clientTop, elem.clientWidth, elem.clientHeight
elem.getClientRects(), elem.getBoundingClientRect()

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 lead 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'

Setting up Emacs daemon on OS X

Tired of waiting for emacs to start on OS X? This step by step guide will teach you how to install the latest version of emacs and configure it to start in the background (daemon mode) and use emacsclient as your main editor.

Install Homebrew

First you'll need to install the [Homebrew package manager][brew] if yo haven't already. It is amazing.

mysql> CREATE USER 'user_name'@'localhost' IDENTIFIED BY 'password';
mysql> GRANT ALL PRIVILEGES ON database_name.* TO 'user_name'@'localhost' WITH GRANT OPTION;
mysql> CREATE USER 'user_name'@'%' IDENTIFIED BY 'password';

mysql> GRANT ALL PRIVILEGES ON database_name.* TO 'user_name'@'%' WITH GRANT OPTION;

	var parser = document.createElement('a');
	parser.href = "http://example.com:3000/pathname/?search=test#hash";

	parser.protocol; // => "http:"
	parser.hostname; // => "example.com"
	parser.port; // => "3000"
	parser.pathname; // => "/pathname/"
	parser.search; // => "?search=test"
	parser.hash; // => "#hash"
	parser.host; // => "example.com:3000"


	run:
	med d janrain_settings

	then:

	add these site settings:

	janrain_backplane_version 1.2 (None) www.local.ajc.com:8000
	janrain_backplane_bus_name coxmediagroup-dev (None) www.local.ajc.com:8000

	/* bling.js */

	window.$ = document.querySelectorAll.bind(document)

	Node.prototype.on = window.on = function (name, fn) {
	this.addEventListener(name, fn)
	}

	NodeList.prototype.__proto__ = Array.prototype

	"""
	Logical deletion for Django models. Uses is_void flag
	to hide discarded items from queries. Overrides delete
	methods to set flag and soft-delete instead of removing
	rows from the database.
	"""
	from django.apps import apps
	from django.contrib.admin.utils import NestedObjects
	from django.db import models
	from django.db.models import signals

	After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
	The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

	Database files have to be updated before starting the server, here are the steps that had to be followed:

	# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
	brew unlink postgresql
	brew install [email protected]
	brew unlink [email protected]
	brew link postgresql

	# Assumes the database container is named 'db'

	DOCKER_DB_NAME="$(docker-compose ps -q db)"
	DB_HOSTNAME=db
	DB_USER=postgres
	LOCAL_DUMP_PATH="path/to/local.dump"

	docker-compose up -d db
	docker exec -i "${DOCKER_DB_NAME}" pg_restore -C --clean --no-acl --no-owner -U "${DB_USER}" -d "${DB_HOSTNAME}" < "${LOCAL_DUMP_PATH}"
	docker-compose stop db