Ignacio Galindo joiggama

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 cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

Application specific host grouping in Riemann-dash

It is generally desirable to group all the hosts for a specific service into a single dashboard view. For example, all the web servers are in single view while all the database servers are in another view.

This is usually not an issue when you are sending custom metrics using Riemann client. However, there are cases where you are using something that you do not control how the metrics are being sent. i.e., Riemann-tools.

Since Riemann-tools scripts are application agnostic, in order for the dashboard view to group hosts, we must inject some application specific information into the tags field. Tags is a collection of arbitrary strings. In the case of Riemann-tools scripts you can pass in arbitrary strings on the command line.

riemann-health --host 127.0.0.1 --tag "prod" --tag "webserver"

List moved

Please use https://github.com/bf4/learning to fork and pull changes.

	# In your test_helper.rb
	class ActiveRecord::Base
	mattr_accessor :shared_connection
	@@shared_connection = nil

	def self.connection
	@@shared_connection \|\| retrieve_connection
	end
	end

	# RSpec 2.0 syntax Cheet Sheet by http://ApproachE.com

	# defining spec within a module will automatically pick Player::MovieList as a 'subject' (see below)
	module Player
	describe MovieList, "with optional description" do

	it "is pending example, so that you can write ones quickly"

	it "is already working example that we want to suspend from failing temporarily" do
	pending("working on another feature that temporarily breaks this one")

	From: Chris DeSalvo <[email protected]>
	Subject: Why we can't process Emoji anymore
	Date: Thu, 12 Jan 2012 18:49:20 -0800
	Message-Id: <[email protected]>

	--Apple-Mail=_6DEAA046-886A-4A03-8508-6FD077D18F8B
	Content-Transfer-Encoding: quoted-printable
	Content-Type: text/plain;
	charset=utf-8

	class ThingController < ApplicationController

	def create_suck
	@thing = Thing.new(params[:thing])

	respond_to do \|format\|
	if @thing.save
	format.html { redirect_to @thing, notice: 'thing was successfully created.' }
	format.json { render json: @thing, status: :created, location: @thing }
	else

	I'm a Rubyist with a lot of admiration for Python. Both languages are
	similar (in the grand scheme of things) and each has huge pros and cons.

	Python does not click for me in the same way as Ruby does not
	click for perhaps the majority of programmer-kind. German doesn't click
	for me either and 100m+ people speak that ;-) But I recently saw an
	example of WHY Python taxes my Ruby brain a little.

	I found some code at http://lukeplant.me.uk/blog/posts/why-learning-haskell-python-makes-you-a-worse-programmer/:

	# Tell system when Xcode utilities live:
	sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

	# Set "opendiff" as the default mergetool globally:
	git config --global merge.tool opendiff