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https://github.com/DesignPatternsPHP/DesignPatternsPHP.git
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Replace array storage with SplObjectStorage
If you already use SPL interfaces in your example, maybe better to use `SplObjectStorage` too instead of `array` to store observers with `attach` and `detach` convenient methods? What do you think?
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@@ -20,9 +20,14 @@ class User implements \SplSubject
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/**
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* observers
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*
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* @var array
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* @var \SplObjectStorage
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*/
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protected $observers = array();
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protected $observers;
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function __construct()
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{
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$this->observers = new \SplObjectStorage();
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}
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/**
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* attach a new observer
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@@ -33,7 +38,7 @@ class User implements \SplSubject
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*/
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public function attach(\SplObserver $observer)
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{
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$this->observers[] = $observer;
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$this->observers->attach($observer);
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}
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/**
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@@ -45,11 +50,7 @@ class User implements \SplSubject
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*/
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public function detach(\SplObserver $observer)
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{
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$index = array_search($observer, $this->observers);
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if (false !== $index) {
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unset($this->observers[$index]);
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}
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$this->observers->detach($observer);
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}
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/**
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