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<?php
trait FirstTrait
{
    public function firstMethod() {
        echo 'This is the firstMethod()' . PHP_EOL;
    }
}

trait SecondTrait
{

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<?php
interface FlyableThingInterface
{
    public function fly();
}

interface AnimalInterface
{
    public function eat();
}

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<?php
interface PersonInterface
{
    public function getFullname();
}

trait PersonTrait
{
    private $name;
    

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<?php
interface AccountInterface
{
    public function getBalance();
    public function increase($money);
    public function decrease($money);
}

trait AccountTrait
{

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<?php
// This is just an example FOR WORDPRESS USERS.
//
// To make this better:
//  * use namespace/class/closure etc.
//  * use autoloader
//  * create & use service provider classes
//  * create & use factory for WP_Query, WP_User etc.

// interface ContainerInterface

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// ----
// Sass (v3.4.1)
// Compass (v1.0.1)
// ----

// A property map
$properties: (
  prop-1: "raw-prop-1-value",
  prop-2: "raw-prop-2-value"
);

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<div class="collection">
  <div class="collection__item">Item 1</div>
  <div class="collection__item">Item 2</div>
  <div class="collection__item">Item 3</div>
</div>

<ul class="collection">
  <li class="collection__item">Item 1</li>
  <li class="collection__item">Item 2</li>
  <li class="collection__item">Item 3</li>

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<a class="button" href="#">&lt;a&gt; button</a>
<button class="button">&lt;button&gt; button</button>

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// ----
// Sass (v3.4.1)
// Compass (v1.0.1)
// ----

// Sass: Typed value factory & validator using Map

// Direction type that accepts only top, right, left, bottom
// Direction type factory
@function dir-new($dir) {

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<a class="button">An example link</a>
<a class="button--ghost">An example link</a>