eoinkelly

Iterating over a collection with access to the index in Ember

// within your view/component
collectionWithIndices: function () {
  return this.get('collection').map(function (item, idx) {
    item.index = String(idx); // we need 0 to be "0" or Handlebars will consider it falsy
    return item;
  });
}.property('collection.@each'),

eoinkelly

// # How to use this:
//
// 1. Open the Ember Inspector on an Ember app (so Ember is loaded)
// 2. Hit the 'clear' button on the Promises tab to remove any promises from the app itself
// 3. Paste this code into the console and watch how the promises inspector displays it
// 4. Twiddle, Rinse & repeat
// 5. More info at 
//   * https://github.com/kriskowal/q/blob/v1/design/README.js (great for understanding promises)
//   * http://emberjs.com/api/classes/Ember.RSVP.Promise.html (Ember promise implementation specifics)

eoinkelly

// I am confused about how you can use `call` without supplying an object for `this`
// The docs don't indicate that you can: 
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/call

var funny = function (a) { return (a + 3); }
funny(3);           // 6
funny.call({},3);   // 6
funny.call(3);      // NaN  // (as expected)

var xs = [1,2,3]

eoinkelly

Keybase proof

I hereby claim:

• I am eoinkelly on github.
• I am eoinkelly (https://keybase.io/eoinkelly) on keybase.
• I have a public key whose fingerprint is 05FB 2362 B986 574E 8E04 10BD 6491 A52A CC5D AABC

To claim this, I am signing this object:

eoinkelly

Hybrid apps in 2014

• What is is like to build hybrid apps in 2014?
• How does it differ from mobile development in 2014?

The tools:

• Webviews
  • WebView not necessairly the same as the built-in browser on the device.
• Apache Cordova

eoinkelly

newpg=9.3.2
oldpg=9.2.4 # set this to your current PG version

# Stop current Postgres server
launchctl unload ~/Library/LaunchAgents/homebrew.mxcl.postgresql.plist

# Backup current db
mv /usr/local/var/postgres/ /usr/local/var/postgres-$oldpg

# Homebrew

eoinkelly

<?php
/* Retrieve information about WordPress images without the chaos.

You have to remember a bunch of different functions to get info about images in the
Media Library so I collected their functionality under one wrapper with a (hopefully)
nice interface. This function tries to avoid fetching unnecessary info whenever it can.

I have limited the granularity of the API to not allow fetching different info
about each available image size. I think that would make using this function
more fiddly without any great benefit.

eoinkelly

Test Setup

• All tests run on same machine: Dell Studio XPS 16 Laptop running Windows 7 x64
• Same codebase except jRuby does use different sqlite adaptor (you cannot use the standard one with jRuby)
• Code has 4 unit tests (incl. 21 assertions) that all pass.
• Code is the example app from Agile Web Development with Rails

Goals

• I wanted to find the fastest way to run my rails tests on my laptop.

eoinkelly

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

eoinkelly

##
#
class Connection
  def self.create_many(inits)
    inits.map { |init| new(init) }
  end

  def self.for_all(conns, &block)
    block.call(conns)
  end