\Core::bind('helper/count_helper', function($app, $base=10, $start_int=0) {
    switch ($base) {
        case 2:
            return new \My\Site\Counter\BinaryCounter($start_int);
        case 10:
            return new \My\Site\Counter\DecimalCounter($start_int);
     }
     throw new \My\Site\Counter\InvalidBaseException($base);
});

Dispatcher extends the Laravel IoC Container, allowing for sensible binding of services (which replace helpers) for lazy loading and overriding.

$app->bind('html/image', '\Application\Src\Html\Image');

//in bootstrap/app
Core::bind('\Concrete\Src\Sharing\SocialNetwork', function($app, $params) {
   return new \Application\Src\Service\Social\Link($params[0]);
});

//old and works
use Concrete\Core\Sharing\SocialNetwork\Link;
//new
use Application\Src\Service\Social\Link;

namespace Concrete\Package\my_packge\Src;
defined('C5_EXECUTE') or die("Access Denied.");
use \Concrete\Core\Foundation\Service\Provider as ServiceProvider;
class SocialServiceProvider extends ServiceProvider
{
    public function register()
    {
        $pkgHandle = 'my_package';
        $singletons = array(
            'helper/social' => '\Concrete\Package\MyPackage\Src\Service\Social\Link',
        );
        foreach($singletons as $key => $value) {
            $this->app->singleton('/packages/' . $pkgHandle . '/' . $key, $value);
            $this->app->singleton($pkgHandle . '/' . $key, $value);
        }

Class \Concrete\Package\MyPackage\Src\Service\Social\Link does not exist
or 
Class 'Application\Src\Service\Social\Link' not found

// concrete/src/service/social/Service
public function getServiceIconHTML()
    {
        return '<i class="block ' . $this->getIcon() . '"></i>';
    }
//To instead output
public function getServiceIconHTML()
    {
        return '<i class="custom-class ' . $this->getIcon() . '"></i>';
    }

<ul class="small-block-grid-3 large-block-grid-6 logos">
                  <li><span class="logo logo-bmw"></span></li>
                  <li><span class="logo logo-mini"></span></li>
                  <li><span class="logo  logo-vw"></span></li>
</ul>

namespace Application\Src\Sharing\SocialNetwork;
defined('C5_EXECUTE') or die("Access Denied.");
class Link extends \Concrete\Core\Sharing\SocialNetwork\Link
{
    public function getServiceIconHTML()
    {
        return '<i class="your-cls your-cls-' . $this->getIcon() . '"></i>';
    }
}

$rh = Loader::helper('rating');

$rh = \Core::make('helper/rating');