patricksimpson

function add(x, y)  {
 while (y != 0) { 
   carry = x & y;   
   x = x ^ y;  
   y = carry << 1; 
 } 
 return x;
}

patricksimpson

Data Structures

Linked List

• A Linked List is a linear collection of data elements, called nodes, each pointing to the next node by means of a pointer. It is a data structure consisting of a group of nodes which together represent a sequence.
• Singly-linked list: linked list in which each node points to the next node and the last node points to null
• Doubly-linked list: linked list in which each node has two pointers, p and n, such that p points to the previous node and n points to the next node; the last node's n pointer points to null
• Circular-linked list: linked list in which each node points to the next node and the last node points back to the first node
• Time Complexity:
• Access: O(n)

patricksimpson

/*
 *   key: 'unqiue_key'
     question: 'string',
     responses: [{ 
      response: 'positive',
      answer: 'battery_terminal'
    }],
 */
const carExpert = [{
  key: 'start',

patricksimpson

(function() {
if (window.fetch) {
  let searchPage = document.querySelector('.search-body');
  if (searchPage) {
    let addLunr = document.createElement('script');
    addLunr.src = '/static/js/lunr.js';
    document.body.appendChild(addLunr);
    addLunr.onload = function() {
      fetch('/lunr.json').then(function(response) {
        return response.json();

patricksimpson

Keybase proof

I hereby claim:

• I am patricksimpson on github.
• I am patricksimpson (https://keybase.io/patricksimpson) on keybase.
• I have a public key ASBhv__xF1M8Vi8U7sqEiLz5uVBSlopVhbY8oGlmIG_BSQo

To claim this, I am signing this object:

patricksimpson

uptime # uptime and CPU stress

w # or better yet:last |head # who is/has been in

netstat -tlpn # find server role

df -h # out of disk space?

grep kill /var/log/messages # out of memory?

patricksimpson

keychainItem=vpn # this name has to match "Account" for the entry you make in keychain
VPNName=""   # match the name of the VPN service to run


function isnt_connected () {
  scutil --nc status "$VPNName" | sed -n 1p | grep -qv Connected
}

get_pw () {
   security 2>&1 >/dev/null find-generic-password -ga $keychainItem \

patricksimpson

var options = {
  username: 'blah',
  server: '127.0.0.1'
};

var ConfigObject = (function(params) {

  var username = params.username || '',
      server = params.server || '',
      password = params.password || '';

patricksimpson

If you have installed mysql 5.7 using homebrew, on macos serria 

Edit your file ~/.my.cnf ( If it does not exist, create it. )

  Add the following lines:
  
  [mysqld]
   sql_mode = "STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

  Save and exit the file.

patricksimpson

int led = D0;

void setup() {
  // This part is mostly the same:
  pinMode(led,OUTPUT); // Our LED pin is output (lighting up the LED)
  Particle.subscribe("opendoor", myOpen);
  Particle.subscribe("closedoor", myClose);
  digitalWrite(led, HIGH);
  delay(2500);