Nick O. albacoretuna

Introduction

C-a == Ctrl-a
M-a == Alt-a

General

:q        close
:w        write/saves
:wa[!]    write/save all windows [force]
:wq       write/save and close

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

⇐ back to the gist-blog at jrw.fi

Advanced SCSS

Or, 16 cool things you may not have known your stylesheets could do. I'd rather have kept it to a nice round number like 10, but they just kept coming. Sorry.

I've been using SCSS/SASS for most of my styling work since 2009, and I'm a huge fan of Compass (by the great @chriseppstein). It really helped many of us through the darkest cross-browser crap. Even though browsers are increasingly playing nice with CSS, another problem has become very topical: managing the complexity in stylesheets as our in-browser apps get larger and larger. SCSS is an indispensable tool for dealing with this.

This isn't an introduction to the language by a long shot; many things probably won't make sense unless you have some SCSS under your belt already. That said, if you're not yet comfy with the basics, check out the aweso

`Scrapy`_ takes care of the bulk of the work for common steps involved in web scraping so you only need to concentrate on the where and how of retrieving the information you want - it also caches HTTP requests, so you only need to hit the target site once and subsequent re-runs are quick.

Target Site: Tesco's Store Locator
Target URL: http://www.tesco.com/storeLocator/

Determining Store IDs

Frontend Development

Attention: the list was moved to

https://github.com/dypsilon/frontend-dev-bookmarks

This page is not maintained anymore, please update your bookmarks.

	var page = new WebPage(),
	address, output, size;

	//capture and captureSelector functions adapted from CasperJS - https://github.com/n1k0/casperjs
	capture = function(targetFile, clipRect) {
	var previousClipRect;
	var clipRect = {top: 0, left:0, width: 40, height: 40};
	if (clipRect) {
	if (!isType(clipRect, "object")) {
	throw new Error("clipRect must be an Object instance.");

	// Includes functions for exporting active sheet or all sheets as JSON object (also Python object syntax compatible).
	// Tweak the makePrettyJSON_ function to customize what kind of JSON to export.

	var FORMAT_ONELINE = 'One-line';
	var FORMAT_MULTILINE = 'Multi-line';
	var FORMAT_PRETTY = 'Pretty';

	var LANGUAGE_JS = 'JavaScript';
	var LANGUAGE_PYTHON = 'Python';

	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"

	/* If you've ever had the need to link directly to an open modal window with Bootstrap, here's a quick and easy way to do it:

	Make sure your modal has an id:

	<div class="modal" id="myModal" ... >

	Then stick this bit of Javascript at at the end of your document:
	*/

	$(document).ready(function() {

	Secure sessions are easy, but not very well documented.
	Here's a recipe for secure sessions in Node.js when NginX is used as an SSL proxy:

	The desired configuration for using NginX as an SSL proxy is to offload SSL processing
	and to put a hardened web server in front of your Node.js application, like:

	[NODE.JS APP] <- HTTP -> [NginX] <- HTTPS -> [PUBLIC INTERNET] <-> [CLIENT]

	Edit for express 4.X and >: Express no longer uses Connect as its middleware framework, it implements its own now.