Perl syntax highlighting in Sublime Text 3

I’m currently writing a project in Perl for a client and have discovered that the default Perl syntax highlighting in Sublime Text is terrible.

Fortunately, the community has stepped up and Blaise Roth has created the ModerlPerl package. Install via Package Control.

To get all Perl files to open with the new syntax highlighter, use View > Syntax > Open all with current extension as… and select ModernPerl from the sub-menu.

Injecting dependencies into your ZF2 controllers

When starting working with Zend Framework 2, it’s common to copy the skeleton and put your controller definitions in module.config.php like this:

'controllers' => array(
  'invokables' => array(
    'Application\Controller\Index' => 'Application\Controller\IndexController',
    'Application\Controller\Blog' => 'Application\Controller\BlogController',

The controllers keyword is picked up by the ControllerManager which is an instance of the ServiceManager which means that it creates the controller instance for you when the dispatcher needs it.
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Sharing host VPN with Vagrant

When moving a project into Vagrant, I realised that I needed the vagrant guest to share my OS X’s VPN.

I’m using a separate IP address within a private network like this: :private_network, ip: ""

So, after some Googling, I added this provider configuration setting:

  config.vm.provider :virtualbox do |vb|
      vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]

and now my VM is sending data over the VPN. Note that this will not work when using the Vagrant’s public_network setting though.

Immutable entities

I’ve been thinking recently about using immutable objects for some of my model-layer entities. That is, an object that cannot be changed once it is created.

Immutable objects have a number of benefits including the fact that they are much easier to understand, simple to use and very easy to test. The main motivation for me is that an immutable object is very predictable as it’s state doesn’t change. This means that any calculated properties can be done once on creation. This is interesting as one application that I’m currently working on has a lot of calculated properties and it’s a source of bugs when one property changes and all the dependent calculations aren’t always done.
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Use statements

I was having a discussion on IRC about use statements and whether they improved code readability or not.

The choices

Consider this hypothetical code:

$cache = new \User\Service\Cache();
$mapper = new \User\Mapper\User($cache)
$form = new \User\Form\Registration($mapper);


use User\Service\Cache;
use User\Mapper\User;
use User\Form\Registration;

// other code

$cache = new Cache();
$db = new User($cache)
$form = new Registration($mapper);

The first snippet is completely unambiguous at the expense of verbosity. Those longer class names make it a little hard to quickly parse what it going on. The second is clearly less cluttered, but is at the expense of ambiguity. Exactly what class is User? I would have to go to the top of the file to find out. Should I use aliases? If so, how should I name them?
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On the 26th January, I fell off a skateboard, dislocating & fracturing my left elbow. A trip to A&E that Sunday resulted in hospital admittance on Monday and surgery on Tuesday.

This was the first time I’ve been admitted to hospital for an overnight stay and I found the whole process fascinating, but not something I ever want to repeat. I also can’t say enough good things about the staff at Worcester Royal Hospital. Everyone I interacted with was friendly, helpful and competent.
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