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directive = ->
  {
    restrict: 'A'
    scope: true
    require: 'ngModel'
    link: (scope, elem, attrs, control) ->
      control.$parsers.unshift (value) ->
        clearTimeout scope.match_password_timeout if scope.match_password_timeout

        if value != ''

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# Setting up environment configuration on Heroku.
heroku config --app myapp
heroku config:add ENV_VAR=somevalue --app myapp
 
# Apply SSL Certs to Heroku
heroku certs --app myapp
heroku certs:add ssl.crt ssl.key --app myapp
 
# Generally useful commands for Heroku
heroku logs --tail --app myapp

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# Description: Add the nestCollection method to the Backbone.Model prototype.
#
# This method accepts an attribute name on the model you're currently referencing,
# along with a collection that you would like to use the attributes of. Making it
# easier to bubble events between a collection/model.
#
# TODO: Fix comparator issues that could be introduced if the dependent collection changes sort order.
Backbone.Model::nestCollection = (attribute_name, collection_to_nest) ->

  # Make sure that there is an array available in the attribute_name that hsa been passed.

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# The MIT License
# Copyright (c) 2012 Christopher WJ Rueber
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
# documentation files (the "Software"), to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, 
# and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all copies or substantial
# portions of the Software.

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Libraries

• jQuery - The de-facto library for the modern age. It makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
• Backbone - Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing API over a RESTful JSON interface.
• AngularJS - Conventions based MVC framework for HTML5 apps.
• Underscore - Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of the built-in JavaScript objects.
• lawnchair - Key/value store adapter for indexdb, localStorage

crueber

trim_the_fat = (str) -> str.replace(/\D+/g, '')
numerals_only = /[^0-9]+/
double_sum_array = [0, 2, 4, 6, 8, 1, 3, 5, 7, 9]

is_valid_credit_card = (card_number) ->
  card_number = trim_the_fat(card_number)
  return false if card_number.length < 13 or numerals_only.test(card_number)

  len = card_number.length
  sum = 0

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# NodeJS Asset Helper.
fs = require 'fs'

asset_dir = './public/assets/'

pull_assets_manifest = ->
  fs.readFile asset_dir+'manifest.json', (err, file) ->
    koaris.locals.assets = JSON.parse(file)
    console.log "Refreshing Asset Manifest"
pull_assets_manifest()

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PRE_AND_POST_UNDERSCORES = /^_+|_+$/g 
EMAIL = /^[a-z0-9!#$%&'*+\/=?^_`{|}~.-]+@[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$/i
URL = /^(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?$/

# HTML Based
SINGLE_TAG = /^<(\w+)\s*\/?>(?:<\/\1>|)$/
HTML = /<|&#?\w+;/
TAG_NAME = /<([\w:]+)/;
XHTML_TAG = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi;

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prodAssetHelpers = require("./middleware/prod_asset_helpers")

if app.get('env') == 'production'
  app.use express.static(path.join(__dirname, "/../public"), maxAge: constant.one_week)
  prodAssetHelpers(app, path.join(__dirname, "/../public"))
else
  app.use express.static(path.join(__dirname, "/../public"), maxAge: constant.one_second)
  app.use connectAssets(paths: [ "public/css", "public/js" ], helperContext: app.locals, build: false)

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# Note on globals: _, app, logger, and Data are global. Everything else is standard node.
# npm libs: aws-sdk, mongoose, express, coffeescript, lo-dash... At least, where this came frome.
# Lo-dash could easily be replaced with a for-each, but I use it all over the place in my apps.

aws        = require 'aws-sdk'
aws.config.update accessKeyId: app.get('s3_access_key'), secretAccessKey: app.get('s3_secret_key')

sqs        = new aws.SQS(region: app.get('aws_region')) # aka 'us-east-1'

queue_url  = "http://sqs.us-east-1.amazonaws.com/#{app.get('aws_user_id')}/#{app.get('s3_bucket')}"