asheeshr

/* 
    This code should be pasted within the files where this function is needed.
    This function will not create any code conflicts.
    
    The function call is similar to printf: ardprintf("Test %d %s", 25, "string");

    To print the '%' character, use '%%'

    This code was first posted on http://arduino.stackexchange.com/a/201
*/

lelandbatey

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

Results

johnjohndoe

require 'addressable/uri'

# Source: http://gist.github.com/bf4/5320847
# Accepts options[:message] and options[:allowed_protocols]
# spec/validators/uri_validator_spec.rb
class UriValidator < ActiveModel::EachValidator

  def validate_each(record, attribute, value)
    uri = parse_uri(value)
    if !uri

linjunpop

Deploy Rails 4 app with Dokku on DigitalOcean

Install dokku

First create a Ubuntu 13.04 x64 droplet on DigitalOcean Control Panel

Then ssh with root account, run this in termianl:

$ wget -qO- https://raw.github.com/progrium/dokku/master/bootstrap.sh | sudo bash

jasonrudolph

5 entertaining things you can find with the GitHub Search API

Let's have some command-line fun with curl, [jq][1], and the [new GitHub Search API][2].

Today we're looking for:

• The hottest repositories created in the last week.
• The oldest user accounts with zero followers. (So sad.)
• Issue trends by language.
• Clojure projects defying convention.

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

shtirlic

# http://www.mono-project.com/Compiling_Mono_on_OSX

require 'formula'

class Mono < Formula
  #url 'http://download.mono-project.com/sources/mono/mono-3.0.6.tar.bz2'
  #sha1 'e2187f80366fcd65c55a1ab946f8d3b39e81be77'
  url 'http://download.mono-project.com/sources/mono/mono-2.10.9.tar.bz2'
  sha1 '1a6e8c5a0c3d88d87982259aa04402e028a283de'
  

jakeonrails

data:text/html, <style type="text/css">#e{position:absolute;top:0;right:0;bottom:0;left:0;}</style><div id="e"></div><script src="http://d1n0x3qji82z53.cloudfront.net/src-min-noconflict/ace.js" type="text/javascript" charset="utf-8"></script><script>var e=ace.edit("e");e.setTheme("ace/theme/monokai");e.getSession().setMode("ace/mode/ruby");</script>

steveklabnik

#!/usr/bin/env ruby

def usage
  puts "./pair [name]: pair two people"
  puts "./pair       : switch to just steve"
  exit
end

def set_config(name, email)
  `git config user.name "#{name}"`

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'