chourobin

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

chourobin

    # encoding : utf-8
    require 'openssl'
    require 'digest/sha1'
    require 'base64'
    
    module Aws
      extend self
      def signed_url(path, expire_date)
        digest = OpenSSL::Digest::Digest.new('sha1')
        can_string = "GET\n\n\n#{expire_date}\n/#{S3_BUCKET}/#{path}"

chourobin

# NullStorage provider for CarrierWave for use in tests.  Doesn't actually
# upload or store files but allows test to pass as if files were stored and
# the use of fixtures.
class NullStorage
  attr_reader :uploader

  def initialize(uploader)
    @uploader = uploader
  end

chourobin

var QcValueConverter = {
  tensionFromQcValue: function(qcValue) {
    return (qcValue - 30.0) * 3.62 + 194.0;
  },

  qcValueFromTension: function(tension) {
    return (tension - 194.0) / 3.62 + 30.0;
  },

  frictionFromQcValue: function(qcValue) {

chourobin

.site_title {
  color: #f35626;
  background-image: -webkit-linear-gradient(92deg,#f35626,#feab3a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  -webkit-animation: hue 60s infinite linear;
}

chourobin

1. Install Xcode
2. Install Command Line Tools
3. Install Homebrew
4. Install Rbenv w/ Ruby
5. Install NVM for Node.js & coffee-script

Apps:

• Dropbox
• Skydrive
• Google Drive

chourobin

Setup AWX (do once)

• Create EC2 instance and login
• Install ansible w/ dependencies (git, python, etc)[http://www.ansibleworks.com/docs/gettingstarted.html]

sudo add-apt-repository ppa:rquillo/ansible
apt-get install ansible
pip install PyYAML Jinja2 paramiko

• Install AWX (pdf)[http://www.ansibleworks.com/releases/awx/docs/awx_user_guide.pdf]

chourobin

#define __IS_IPHONE_5 ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )568 ) < DBL_EPSILON )

#define __IPHONE_OS_VERSION_MIN_REQUIRED

#define __IPHONE_OS_VERSION_MAX_ALLOWED

chourobin

UIView *view = [panGesture view];

if (panGesture.state == UIGestureRecognizerStateBegan) {
    self.collectionView.panGestureRecognizer.enabled = NO;
    self.offsetY = view.frame.origin.y;
} else if (panGesture.state == UIGestureRecognizerStateBegan || panGesture.state == UIGestureRecognizerStateChanged)
{
    CGPoint translation = [panGesture translationInView:[view superview]];
    if (view.frame.origin.y <= 0 && translation.y < 0) {
        return;

chourobin

description "dash_mux_service"

start on filesystem or runlevel [2345]
stop on runlevel [!2345]
limit nofile 50000 50000

respawn
respawn limit 10 5

pre-start script