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What is an efficient way to implement a singleton pattern in Java?
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Why does Apple recommend to use dispatch_once for implementing the singleton pattern under ARC?
What's the exact reason for using dispatch_once in the shared instance accessor of a singleton under ARC? + (MyClass *)sharedInstance { // Static local predicate must be initialized to 0 static MyClass *sharedInstance = nil; static dispatch_once_t onceToken = 0; dispatch_once(&onceToken, ^{ sharedInstance = [[MyClass alloc] init]; // Do any other initialisation stuff here }); return sharedInstance
some confusions to singleton pattern in PHP
In my team I've been told to write resource class like this style: class MemcacheService { private static $instance = null; private function __construct() { } public static function getInstance($fortest = false) { if (self::$instance == null) { self::$instance = new Memcached(); if ($fortest) { self::$instance->addServer(MEMTEST_HOST, MEMTEST_PORT); } else { self::$instance->addServer(MEM_HOST, ME
Javascript: best Singleton pattern
Possible Duplicate: Simplest/Cleanest way to implement singleton in JavaScript? I'm using this pattern for singletons, in the example the singleton is PlanetEarth: var NAMESPACE = function () { var privateFunction1 = function () { privateFunction2(); }; var privateFunction2 = function () { alert('I\'m private!'); }; var Constructors = {}; Constructors.PlanetEarth = function () { privateFunction1()
PHP singleton database connection pattern
I've been working on a small project using PHP and MySQL. I've read a lot around about best practices on managing a connection and so on. I've also implemented (following some posts found around) a singleton class to manage MySQL connections. require_once 'config.inc.php'; class DbConn { private static $instance; private $dbConn; private function __construct() {} /** * * @return DbConn */ private
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Difference between static class and singleton pattern?
