zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

alloy

framework 'Foundation'

class NSIndexSet
  def each
    i = firstIndex
    while i != NSNotFound
      yield i
      i = indexGreaterThanIndex(i)
    end
  end

rgreenjr

Git Cheat Sheet

Common Commands

# stage all modified files being tracked
git add -u

seanlilmateus

#!/usr/local/bin/macruby
framework 'Foundation'
include Dispatch

#``O_EVTONLY`` is defined as ``0x8000`` in the OS X header files.
# instead of RDONLY flag I use the O_EVTONLY flag to open() the file, otherwise we'll prevent the 
# volume that the file is on from being unmounted.

O_EVTONLY = 0x8000

dominic

Submitting to the App Store

First, install Developer certs from Apple's Developer portal

To Build the Application:

• Select "Your App" from your Scheme menu, NOT "Deployment"
• Select Product > Archive to build for Release
• Once completed, the Organizer window will open
• Select your recent build and press the "Validate" button - make sure this passes!

chadbrewbaker

# Gist to go with http://www.austinrochford.com/posts/2013-10-28-median-of-medians.html
# Chad Brewbaker   10/28/2013
#  https://news.ycombinator.com/item?id=6628474

def median_5(list, i = list.length/2)
  return list.sort[i]
end

def median(list, i = list.length/2)
  if (list.length <= 5)

dhh

# config/routes.rb
resources :documents do
  scope module: 'documents' do
    resources :versions do
      post :restore, on: :member
    end

    resource :lock
  end
end

deepakkumarnd

# This script has to be run as a root user 
echo "* Updating system"
apt-get update
apt-get -y upgrade
echo "* Installing packages"
apt-get -y install build-essential libmagickcore-dev imagemagick libmagickwand-dev libxml2-dev libxslt1-dev git-core nginx redis-server curl nodejs htop

id -u deploy &> /dev/null

if [ $? -ne 0 ]

steven2358

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

zeyademam

Troubleshooting Convolutional Neural Networks

Intro

This is a list of hacks gathered primarily from prior experiences as well as online sources (most notably Stanford's CS231n course notes) on how to troubleshoot the performance of a convolutional neural network . We will focus mainly on supervised learning using deep neural networks. While this guide assumes the user is coding in Python3.6 using tensorflow (TF), it can still be helpful as a language agnostic guide.

Suppose we are given a convolutional neural network to train and evaluate and assume the evaluation results are worse than expected. The following are steps to troubleshoot and potentially improve performance. The first section corresponds to must-do's and generally good practices before you start troubleshooting. Every subsequent section header corresponds to a problem and the section is devoted to solving it. The sections are ordered to reflect "more common" issues first and under each header the "most-eas