Gustavo Leguizamon goopi

Virtual DOM and diffing algorithm

There was a [great article][1] about how react implements it's virtual DOM. There are some really interesting ideas in there but they are deeply buried in the implementation of the React framework.

However, it's possible to implement just the virtual DOM and diff algorithm on it's own as a set of independent modules.

a simple git branching model (written in 2013)

This is a very simple git workflow. It (and variants) is in use by many people. I settled on it after using it very effectively at Athena. GitHub does something similar; Zach Holman mentioned it in this talk.

Update: Woah, thanks for all the attention. Didn't expect this simple rant to get popular.

How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.
Use production SSL certificates locally. This is annoying

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \

I'm having trouble understanding the benefit of require.js. Can you help me out? I imagine other developers have a similar interest.

From Require.js - Why AMD:

The AMD format comes from wanting a module format that was better than today's "write a bunch of script tags with implicit dependencies that you have to manually order"

I don't quite understand why this methodology is so bad. The difficult part is that you have to manually order dependencies. But the benefit is that you don't have an additional layer of abstraction.

	"""A simple implementation of a greedy transition-based parser. Released under BSD license."""
	from os import path
	import os
	import sys
	from collections import defaultdict
	import random
	import time
	import pickle

	SHIFT = 0; RIGHT = 1; LEFT = 2;

	BOOL MTDIsBoldTextEnabled(void) {
	static BOOL boldTextEnabled = NO;

	static dispatch_once_t onceToken;
	dispatch_once(&onceToken, ^{
	// Hack that checks if the "bold text" flag in the accessibility settings is enabled
	UIFont *font = [UIFont preferredFontForTextStyle:UIFontTextStyleBody];
	boldTextEnabled = [font.fontName rangeOfString:@"MediumP4"].location != NSNotFound;
	});

	/**
	* (C)Leanest CSS spinner ever
	*/

	@keyframes spin {
	to { transform: rotate(1turn); }
	}

	.progress {
	position: relative;

	NSURLConnection \| NSURLSession
	------------------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------
	NSURLConnectionDelegate connectionShouldUseCredentialStorage: \|
	------------------------------------------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------------------------------------
	NSURLConnectionDelegate connection:willSendRequestForAuthenticationChallenge: \| NSURLSessionDelegate URLSession:didReceiveChallenge:completionHandler:
	\| N

	function params(fn) {
	var str = fn.toString();
	var sig = str.match(/\(([^)]*)\)/)[1];
	if (!sig) return [];
	return sig.split(', ');
	}

	console.api = function(obj){
	console.log();
	var proto = Object.getPrototypeOf(obj);