redroot

# array of arrays

a = [[10, 1000], [9, 923], [8, 1230], [7, 10]] # [data,frequency]

mean = a.reduce(0) { |m,r| m += r[0] * r[1] } / a.reduce(0) { |m,r| m += r[1] }.to_f

jschwertfeger

/*
 * Unobtrusive autocomplete for model associations.
 *
 * For instance, assume you have a model `Task' and a model `User'. The task has
 * an attribute user_id which associates the user who is assigned to the task.
 * This widget allows you to build a form for tasks where the association is
 * represented by a hidden user_id field that gets populated through an
 * autocomplete text field.
 *
 * To use it you just have to include the tag attributes for the autocomplete

johanmeiring

# From http://garmoncheg.blogspot.com/2012/06/pretty-git-log.html
git config --global alias.lg "log --color --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit --"

olistik

Ubuntu 12.10 setup (rbenv/RVM, Janus, PostgreSQL)

Basic pre-requisites

• Some utilities:

sudo apt-get install vim tmux git curl

• Copy/paste from the command line:

comp615

.leaflet-div-icon {
	background: transparent;
	border: none;
}

.leaflet-marker-icon .number{
	position: relative;
	top: -37px;
	font-size: 12px;
	width: 25px;