jnicklas

require "capybara"
 
html = DATA.read
app = proc { |env| [200, { "Content-Type" => "text/html" }, [html] ] }
 
sess = Capybara::Session.new(:selenium, app)
sess.visit("/")
 
__END__
 

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

aras-p

// Just before switching jobs:
// Add one of these.
// Preferably into the same commit where you do a large merge.
//
// This started as a tweet with a joke of "C++ pro-tip: #define private public",
// and then it quickly escalated into more and more evil suggestions.
// I've tried to capture interesting suggestions here.
//
// Contributors: @r2d2rigo, @joeldevahl, @msinilo, @_Humus_,
// @YuriyODonnell, @rygorous, @cmuratori, @mike_acton, @grumpygiant,

hofmannsven

Git

Global Settings

• Related Setup: https://gist.github.com/hofmannsven/6814278
• Related Pro Tips: https://ochronus.com/git-tips-from-the-trenches/
• Interactive Beginners Tutorial: http://try.github.io/
• Git Cheatsheet by GitHub: https://services.github.com/on-demand/downloads/github-git-cheat-sheet/

Reminder

Press minus + shift + s and return to chop/fold long lines!

adaugherity

#!/usr/bin/ruby
# Create display override file to force Mac OS X to use RGB mode for Display
# see http://embdev.net/topic/284710

require 'base64'

data=`ioreg -l -d0 -w 0 -r -c AppleDisplay`

edids=data.scan(/IODisplayEDID.*?<([a-z0-9]+)>/i).flatten
vendorids=data.scan(/DisplayVendorID.*?([0-9]+)/i).flatten

hanxue

At the end of your Blogger post , using HTML editor, append this

<script src="https://raw.github.com/moski/gist-Blogger/master/public/gistLoader.js" type="text/javascript"></script>

In the content of your blog post, simply add this:

<div class="gistLoad" data-id="8488564" id="gist-8488564">Loading https://gist.github.com/8488564....</div>

Note: adding the URL is useful because when the javascript does not work, readers can copy and paste the URL themselves. 

jamesyang124

#!/bin/ruby --verion => 2.0.0-p353

Self

In Ruby, self is a special variable that always references the current object.

• Inside class or module definition, self refer to the Class or Module object.
• Inside instance method, self refer to future instance object.
• Inside class method, self refer to the class.i

olasd

#! /bin/bash
#
# Diffusion youtube avec ffmpeg

# Configurer youtube avec une résolution 720p. La vidéo n'est pas scalée.

VBR="2500k"                                    # Bitrate de la vidéo en sortie
FPS="30"                                       # FPS de la vidéo en sortie
QUAL="medium"                                  # Preset de qualité FFMPEG
YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2"  # URL de base RTMP youtube

pachacamac

def rgb(r, g, b)16+(r.to_i*36)+(g.to_i*6)+b.to_i end
def colorize(s, fg, bg = nil) "#{fg ? "\x1b[38;5;#{fg}m" : ''}#{bg ? "\x1b[48;5;#{bg}m" : ''}#{s}\x1b[0m" end
def rainbow(n)f,w,o=5.0/n,3,3; (0...n).map{|i| rgb(Math.sin(f*i+0)*o+w, Math.sin(f*i+2)*o+w, Math.sin(f*i+4)*o+w)} end
def display(board, goal=2048)
  @palette ||= rainbow(Math.log2(goal))
  puts board.map{|r| r.map{|c| colorize((c==0 ? ?. : c).to_s.center(6), @palette[Math.log2(c+1)])}.join}.join("\n\n")
end

def compress(board, direction)
  t=->(a){z=0;a.reduce([]){|s,e| z+=e==s[-1]? (s[-1]+=e;1): e>0? (s<<e;0): 1;s}+Array.new(z,0)} # trivial case: 1D array to the left

dvliman

$: (Dollar Colon) is basically a shorthand version of $LOAD_PATH. $: contains an array of paths that your script will search through when using require.
$0 (Dollar Zero) contains the name of the ruby program being run. This is typically the script name.
$* (Dollar Splat) is basically shorthand for ARGV. $* contains the command line arguments that were passed to the script.
$? (Dollar Question Mark) returns the exit status of the last child process to finish.
$$ (Dollar Dollar) returns the process number of the program currently being ran.
$~ (Dollar Tilde) contains the MatchData from the previous successful pattern match.
$1, $2, $3, $4 etc represent the content of the previous successful pattern match.
$& (Dollar Ampersand) contains the matched string from the previous successful pattern match.
$+ (Dollar Plus) contains the last match from the previous successful pattern match.
$` (Dollar Backtick) contains the string before the actual matched string of the previous successful pattern match.