epitron

Fibur

Fibur is a library that allows concurrency during Ruby I/O operations without needing to make use of callback systems. Traditionally in Ruby, to achieve concurrency during blocking I/O operations, programmers would make use of Fibers and callbacks. Fibur eliminates the need for wrapping your I/O calls with Fibers and a callback. It allows you to write your blocking I/O calls the way you normally would, and still have concurrent execution during those I/O calls.

Example

Say you have a method that fetches data from a network resource:

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.

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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?

	#!/usr/bin/env ruby

	require 'socket'
	require 'openssl'
	require "base64"

	server = "some-irc.tld"
	port = "6667"
	nick = "Nickname#{rand(5000)}"
	channel = "#channel"

	require 'epitools'

	class State

	attr_accessor :fore, :back, :attrs

	COLORS = [:black, :red, :green, :yellow, :blue, :magenta, :cyan, :white]

	ATTRS = {
	0 => :reset,

	$stack, $draws = [], {}

	def method_missing *args
	return if args[0][/^to_/]
	$stack << args.map { \|a\| a or $stack.pop }
	$draws[$stack.pop(2)[0][0]] = args[1] if args[0] == :<
	end

	class Array
	def +@

	# config/initializers/source_maps.rb

	if Rails.env.development?
	require 'open3'
	module CoffeeScript
	class SourceMapError < StandardError; end;

	class << self

	def map_dir

	#!/usr/bin/env ruby

	# grd: micro Guard.
	#
	# Watch one or more filename patterns and then run the given command every time
	# something changes.
	#
	# Example:
	# grd my_model "rspec spec/models/my_model_spec.rb"