samkahchiin

class Sudoku
  
  def initialize(board_string)
  	p "Start game!"
  	board(board_string)
  end

  def solve!(string)
  	create_string_array(string)

samkahchiin

# Eg. PORT_NUMBER -> 3000
kill -9 $(lsof -t -i:PORT_NUMBER -sTCP:LISTEN)

samkahchiin

#!/usr/bin/env ruby

require "english"
require "rubocop"

ADDED_OR_MODIFIED = /A|AM|^M/.freeze

file_list = `git status --porcelain`.split(/\n/)
file_list = file_list.select do |file_name_with_status|
  file_name_with_status =~ ADDED_OR_MODIFIED

samkahchiin

git for-each-ref --sort=-committerdate --format="%(refname)" refs/heads > all | head -n 10 > first-10
diff first-10 all | sed "s/> refs\/heads\///g" | xargs git branch -D | rm all | rm first-10

samkahchiin

Octave CheatSheet

GNU Octave is a high-level interpreted language, primarily intended for numerical computations.
(via GNU Octave)

Basics

• not equal ~=
• logical AND &&

samkahchiin

function validEmail(email) { // see:
  var re = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;
  return re.test(email);
}

function validateHuman(honeypot) {
  if (honeypot) {  //if hidden form filled up
    console.log("Robot Detected!");
    return true;
  } else {

samkahchiin

# move all files from current directory to upper directory
mv * ../

# copy all files in 'a' folder to 'b' folder 
cp -a /a/. /b/

samkahchiin

# Open Terminal
vim ~/.vimrc
# Mac OS-X -> .vimrc ; Window -> .gvimrc
# Add it in the file and adjust the font size (h12) accordingly 
set guifont=Menlo\ Regular:h15

samkahchiin

# Do this to ensure that you still can safely return to the original state if the deploy is unsuccessful

APPNAME=production
# Backing up the data from production (or apps name) to your heroku dashboard
heroku pg:backups capture -r APPNAME

# Downloading the data from the heroku dashboard to local machine
curl -o {PATHNAME}.dump `heroku pg:backups public-url -r APPNAME`

samkahchiin

function pairwise(arr, arg) {
  var ans = [];
  for(var i = 0; i < arr.length ; i++){
    var elem = arr.shift();   
    var pairElemIndex = arr.indexOf(arg - elem);
    if( pairElemIndex !== -1 ){
      ans.push(i,pairElemIndex + i + 1);
      delete arr[pairElemIndex];
    }
  }