This question already has answers here: 开发者_高级运维 Closed 12 years ago. Possible Duplicate: On Design Patterns: When to use the Singleton?
I am writing a unit test by mocking out external services com.example.Service service; service = RealServiceClient.getService().getServiceId(\"1\");
The Java EE 6 Tutorial says: To improve performance, you might choose a stateless session bean if it has any of these traits:
So my clien开发者_运维技巧ts iphone app has balloned from 5 or so classes to over 25 in the last few weeks.With such a large (for the iphone anyway) class structure I\'ve been utilizing the Singleton
Multiple texts say that when implementing double-checked locking in .NET the field you are locking on开发者_开发问答 should have volatile modifier applied. But why exactly? Considering the following e
I have an application that gets some data from the user when the application loads and is needed throughout the application, what is the best way to keep hold of the object that holds this data throug
My spaghetti monster consumes XML from several different SOAP services, and the URL for each service is hardcoded into the application.I\'m in the process of undoing this hardcoding, and storing the U
I have a windows service running.Inside this service I have hosted some service (WCF). I need to have some kind of a \"in memory data holder\" class. The purpose of this class is to hold not-persistan
Take the following code as an example: class xpto { public function __get($key) { return $key; } } function xpto()
I just read a few threads on the discussion of singleton design in javascript. I\'m 100% new to the Design Pattern stuff but as I see since a Singleton by definition won\'t have the need to be instant
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