Vishal Telangre vishaltelangre

Vagrant Setup

This tutorial guides you through creating your first Vagrant project.

We start with a generic Ubuntu VM, and use the Chef provisioning tool to:

install packages for vim, git
create user accounts, as specified in included JSON config files
install specified user dotfiles (.bashrc, .vimrc, etc) from a git repository

Afterwards, we'll see how easy it is to package our newly provisioned VM

Use /etc/resolver. For instance, to change the DNS servers for irc.freenode.net, create the file

/etc/resolver/irc.freenode.net

And set its contents to

nameserver 8.8.8.8

nameserver 8.8.4.4

Mathematics: What do grad students in math do all day?

by Yasha Berchenko-Kogan

A lot of math grad school is reading books and papers and trying to understand what's going on. The difficulty is that reading math is not like reading a mystery thriller, and it's not even like reading a history book or a New York Times article.

The main issue is that, by the time you get to the frontiers of math, the words to describe the concepts don't really exist yet. Communicating these ideas is a bit like trying to explain a vacuum cleaner to someone who has never seen one, except you're only allowed to use words that are four letters long or shorter.

What can you say?

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:

	require 'bundler/capistrano'

	set :application, "net"
	set :repository, "[email protected]:net.git"

	set :scm, :git

	set :default_environment, {
	'PATH' => "$HOME/.rbenv/shims:$HOME/.rbenv/bin:$PATH"
	}

	#!/bin/sh


	#
	# Take a photo of you, whenever you make a commit
	#
	# This is an improved version of Víctor Martínez original post:
	# http://coderwall.com/p/xlatfq
	#
	# Improvements:

	// From the 140bytes wishlist here: https://github.com/jed/140bytes/wiki/Wishlist
	// TASK:
	// Create a function which can create a DOM structure from this:
	//
	domBuilder(
	[/HTML/],
	[/HEAD/],
	[/TITLE/],
	"Wouldn't this be cool?",
	[],

	# Copy the following and place it a file called Leiningen.sublime-build in the Sublime user packages folder (~/.config/sublime-text-2/Packages/User on Linux).
	# Select this as the build system for the project using Tools/Build System/Leiningen.
	# You can then bring up the Sublime Command Palette (ctrl+shift+P on Windows/Linux) and issue any of the commands # (build, documentation, clean, run, test, etc). By default, build is bound to ctrl+b and run to ctrl+shift+b.


	{
	"cmd": ["lein", "compile", ":all"],
	"working_dir": "$project_path",
	"variants": [
	{ "cmd": ["lein", "marg", "-m", "-d", "docs"],

	# See http://m.onkey.org/running-rails-performance-tests-on-real-data
	# fixed to work with Rails 3.2.8

	# START : HAX HAX HAX
	# Load Rails environment in 'test' mode
	RAILS_ENV = "test"
	require File.expand_path('../../config/environment', __FILE__)

	# Re-establish db connection for 'performance' mode
	silence_warnings { RAILS_ENV = "performance" }

	access_key_id: xxx
	secret_access_key: yyy