Gimi Liang zliang-min

Set the default size for new Docker for Mac disk images

UPDATE: The instructions here are no longer necessary! Resizing the disk image is now possible right from the UI since Docker for Mac Version 17.12.0-ce-mac49 (21995).

If you are getting the error: No space left on device

Configuring the qcow2 size cap is possible in the current versions:

# my disk is currently 64GiB

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Learn JavaScript concepts with the Chrome DevTools

Authored by Peter Rybin , Chrome DevTools team

In this short guide we'll review some new Chrome DevTools features for "function scope" and "internal properties" by exploring some base JavaScript language concepts.

Closures

Let's start with closures – one of the most famous things in JS. A closure is a function, that uses variables from outside. See an example:

ruby-1.9.3-p327 cumulative performance patch for rbenv

This installs a patched ruby 1.9.3-p327 with various performance improvements and a backported COW-friendly GC, all courtesy of funny-falcon.

Requirements

You will also need a C Compiler. If you're on Linux, you probably already have one or know how to install one. On OS X, you should install XCode, and brew install autoconf using homebrew.

	#!/usr/bin/env ruby

	require 'time'
	require 'logger'
	require 'aws-sdk'

	AWS_REGION = "us-east-1"
	AWS_KEY_ID = ""
	AWS_SECRET_KEY = ""

	(function() {
	var CSSCriticalPath = function(w, d, opts) {
	var opt = opts \|\| {};
	var css = {};
	var pushCSS = function(r) {
	if(!!css[r.selectorText] === false) css[r.selectorText] = {};
	var styles = r.style.cssText.split(/;(?![A-Za-z0-9])/);
	for(var i = 0; i < styles.length; i++) {
	if(!!styles[i] === false) continue;
	var pair = styles[i].split(": ");

	$VERBOSE = nil
	require File.expand_path('../rooby', __FILE__)


	Person = Rooby::Class.new 'Person' do
	define :initialize do \|name\|
	@name = name
	end

	define :name do

	require 'minitest/autorun'

	###
	# Test to demonstrate TCO in Ruby. Tested in 1.9.2+
	class TestTCO < MiniTest::Unit::TestCase
	code = <<-eocode
	class Facts
	def fact_helper(n, res)
	if n == 1
	res

	# Problem: I need to add some model's default scope to an ARel query

	# I don't know if everyone else already knew this, or if there's a
	# a cleaner way; but this has been working well for me:
	class OtherModel < ActiveRecord::Base
	# ...
	default_scope where(:deleted_at => nil)
	# ...
	end

	function isRetina(){
	return (('devicePixelRatio' in window && devicePixelRatio > 1) \|\|
	('matchMedia' in window && matchMedia("(min-resolution:144dpi)").matches))
	}