Costis Panagiotopoulos costis

How to manage git submodules

git submodule add http://blah.blha.com/project.git a_project_path
git add *
git commit -m "adding a submodule"

cd a_project_path

git pull

CREATE DATABASE mydb DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_general_ci;

Your class can be no longer than a hundred lines of code.
Your methods can be no longer than five lines of code
You can pass no more than four parameters and you can't just make it one big hash.
In your controller, you can only instantiate one object, to do whatever it is that needs to be done.
Your view can only know about one instance variable.
Your Rails view should only send messages to that object i.e., no Demeter violations.[ "thunder dome principal". Translated: one model in, one model out! ]
Rules are meant to be broken if by breaking them you produce better code. [ ...where "better code" is validated by explaining why you want to break the rule to someone else. ]

	# For context, this was inspired by the RubyRogues podcast #79 where they talked about
	# documentation in Ruby, and specifically grumbled quite a bit about the failings of RDoc.
	#
	# http://rubyrogues.com/079-rr-documenting-code/
	#
	# As someone who's spent a lot of time using an IDE for programming C# and Java, I think
	# Ruby could do a lot better at putting documentation at our fingertips as we program.
	#
	# Maybe making the documentation part of the structure of the code would facilitate this?
	#

	# replace a string occuring to all .yml documents, everywhere in history.
	# note: -i "" in sed was needed for OSX. Normally I would write 'sed -i -e "s/foo/bar/g"'.
	git filter-branch --tree-filter 'find . -name "*.yml" -exec sed -i "" -e "s/some-config-parameter/new-config-parameter/g" {} \;' HEAD

	# the above will create an internal git backup. Delete it with the following command:
	git update-ref -d refs/original/refs/heads/master


	# create a script with the following contents to change commiter/author name & email.
	#!/bin/sh

	# From:http://alisnic.net/blog/making-your-ruby-fly/

	# into ~/.rvmrc
	rvm_configure_env=(CFLAGS="-march=core2 -O2 -pipe -fomit-frame-pointer")

	# and then
	rvm install 1.9.3-turbo --patch falcon

	# or better
	rvm get head

	# Scan all installed gems - very slow
	ctags --extra=+f --exclude=.git --exclude=log -R * gem environment gemdir/gems/*

	# Scan only gems from current Gemfile
	bundle list --paths=true \| xargs ctags --extra=+f --exclude=.git --exclude=log -R *

	require 'factory_girl_rails'
	require 'rspec'
	require 'rspec-rails'
	require 'rspec/mocks/standalone' # => if factories need stubs (for remote services for example)

	include FactoryGirl::Syntax::Methods # make FG methods available at top level, so you can do `> create :user`

	def reload_factories!
	FactoryGirl.instance_variable_set(:@factories, nil) # => clear loaded factories/sequences
	# FactoryGirl.instance_variable_set(:@sequences, nil)