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<?php

/**
 * Get human readable time difference between 2 dates
 *
 * Return difference between 2 dates in year, month, hour, minute or second
 * The $precision caps the number of time units used: for instance if
 * $time1 - $time2 = 3 days, 4 hours, 12 minutes, 5 seconds
 * - with precision = 1 : 3 days
 * - with precision = 2 : 3 days, 4 hours

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tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

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# Simple bijective function
#   Basically encodes any integer into a base(n) string,
#     where n is ALPHABET.length.
#   Based on pseudocode from http://stackoverflow.com/questions/742013/how-to-code-a-url-shortener/742047#742047

ALPHABET =
  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789".split(//)
  # make your own alphabet using:
  # (('a'..'z').to_a + ('A'..'Z').to_a + (0..9).to_a).shuffle.join

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NOTE I now use the conventions detailed in the SUIT framework

Template Components

Used to provide structural templates.

Pattern

t-template-name

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do ($ = jQuery, exports = window) ->

  class ActiveDataBinder
    constructor: (uid) ->

      # Use a jQuery object as simple PubSub

      pubSub = $ {}

      # We expect a 'data' attribute specifying the binding

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<div class="col-md-8 col-md-offset-1">
  <div class="panel panel-default">
    <%= form_for(@weekly_performance_review) do |f| %>
      <% if @weekly_performance_review.errors.any? %>
        <div id="error_explanation">
          <h2><%= pluralize(@weekly_performance_review.errors.count, "error") %> prohibited this weekly_performance_review from being saved:</h2>

          <ul>
          <% @weekly_performance_review.errors.full_messages.each do |message| %>
            <li><%= message %></li>

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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.

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The introduction to Reactive Programming you've been missing

(by @andrestaltz)

---

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

---

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#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)

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// The reducer function looks at each action that comes in
// and based on the type generates a new state based on the
// previous state and any additional data the action carried
const reducer = (state, action) => {
  switch (action.type) {
    case "COUNT_INCREMENT":
      return {
        ...state,
        count: state.count + 1
      };