dhh

# autoload concerns
module YourApp
  class Application < Rails::Application
    config.autoload_paths += %W(
      #{config.root}/app/controllers/concerns
      #{config.root}/app/models/concerns
    )
  end
end

darkhelmet

Block
  should return from the closure
  should ignore extra arguments
  should not care if not enough parameters are passed
  should set unpassed parameters to `nil`
  should accept *args

Lambda
  should return from the lambda
  should whine about too many arguments

andrewrcollins

function ltrim(s) { sub(/^[ \t\r\n]+/, "", s); return s }
function rtrim(s) { sub(/[ \t\r\n]+$/, "", s); return s }
function trim(s)  { return rtrim(ltrim(s)); }
BEGIN {
# whatever
}
{
# whatever
}
END {

piscisaureus

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

netpoetica

/* 

	assert.js 
	by keith rosenberg / netpoetica
	
	An assert function that will create a visual pane if browser is present. It will always
	output to console as well. The styling is configured to be position-fixed to the top
	right corner (hopefully in most situations, out of the way). I created this after viewing
        http://net.tutsplus.com/tutorials/javascript-ajax/quick-tip-quick-and-easy-javascript-testing-with-assert/
	

crosbymichael

package main

import (
  "flag"
	"fmt"
	"log"
	"net/http"
	"os"
)

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

rofl0r

#define _XOPEN_SOURCE 700
#include <signal.h>
#include <unistd.h>

int main()
{
	sigset_t set;
	int status;

	if (getpid() != 1) return 1;

scy

Opening and closing an SSH tunnel in a shell script the smart way

I recently had the following problem:

• From an unattended shell script (called by Jenkins), run a command-line tool that accesses the MySQL database on another host.
• That tool doesn't know that the database is on another host, plus the MySQL port on that host is firewalled and not accessible from other machines.

We didn't want to open the MySQL port to the network, but it's possible to SSH from the Jenkins machine to the MySQL machine. So, basically you would do something like

ssh -L 3306:localhost:3306 remotehost

shyouhei

#! /your/favourite/path/to/ruby
# -*- coding: utf-8 -*-
# Copyright (c) 2013 Urabe, Shyouhei
#
# Permission is hereby granted, free of  charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without  restriction, including without limitation the rights
# to  use, copy, modify,  merge, publish,  distribute, sublicense,  and/or sell
# copies  of the  Software,  and to  permit  persons to  whom  the Software  is
# furnished to do so, subject to the following conditions: