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  interestingMessageReceivedAts: Ember.arrayComputed "messages",
    addedItem: (array, message, changeMeta, instanceMeta) ->
      console.log 'added', message.get('id')
      array
    removedItem: (array, message, changeMeta, instanceMeta) ->
      console.log 'removed', message.get('id')
      array

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#!/bin/bash

node --debug-brk $(which grunt) "$@"

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123-456-7890

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Apple has changed how it distributes OS X Mavericks since its initial release in October 2013. This note was written on May 2, 2014. This affects the instructions you'll find online for how to make a bootable OS X installer.

It used to be that when you downloaded OS X from the App Store, the entire 5GB installer was placed in /Applications/Install OS X Mavericks.app. Now, there is a simple shortcut program placed in /Applications/OS X Mavericks.app. The app file is immediately removed in the event of an error or a successful post-install launch. When the download succeeds, the app file is launched which brings up the traditional install wizard, but this time mounted to /Volumes/Install OS X Mavericks.

I actually discovered this because if you already have a volume mounted of the same name (which I did, because I was trying to update my existing USB installer), the App Store download promptly fails right after finishing its download.

So if you have an empty disk you'd like to use as an installer that'

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class Foo
  constructor: ->
    Mixin.callMeAfterRenderHappens(this)
    
  rendered: -> 
    #do stuff

new MyView(foo).render() #=> Foo#rendered is eventually called

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App.Conversation = DS.Model.extend
  messages: DS.hasMany('message')

  myMessages: (->
    @store.filter 'message', (message) =>
      message.get('conversation') == this
  ).property()

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class NullClient < Client #<-- subclass b/c otherwise form helpers, other things, explode
  def _create_record
  end
  def _update_record
  end


  def name
  end
end

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Regex replacements in postgres

I had to make a simple change to all the strings in a table, and I was dreading having to load them into memory, iterate over them, searching for the string, and updating replacements. So instead, I learned that postgresql can actually do regex replacements in an update statement.

For example, if I have a links table with a url column with a bunch of URLs erroneously ending in "?":

Link.where("long_url like '%?'").count #=> 487185

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#!/bin/bash -e
PREV_PWD=`pwd`
mkdir -p "$HOME/tmp"
cd "$HOME/tmp"

echo "-----> Cloning into $1"
heroku git:clone -a $1
cd $1

echo "-----> Setting stack to cedar"

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<%= stylesheet_link_tag "application", :media => "screen,print" %>