Examples of using The singleton in English and their translations into Chinese
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Ecclesiastic
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Programming
The Singleton Family.
On design patterns: When should I use the singleton?
The Singleton Park Campus.
Our chemistry postgraduate open days take place at the Singleton Park Campus.
The Singleton seems to be more of a hardship.
People also translate
Let's start at the basics with the simplest of all design patterns: the Singleton.
You will pass the Singleton Army Base on your left hand side.
As shown with BorderFactory,the Factory pattern does not have to be used with the Singleton pattern.
By changing to the Singleton pattern, you avoid recreating the same object.
Identifying the need for the Singleton pattern at design time can simplify development.
Tŷ Beck consists of six large Victorian town houses situated in the Uplands area of Swansea,approximately a mile from the Singleton campus.
In my last blog post article I discussed the Singleton Design Pattern and how it is used in JavaScript.
To get the Singleton factory, you call the getSharedInstance() method of PopupFactory:.
If you can answer"yes" to the questions below regarding your specific use case, the singleton pattern can yield some practical benefits.
And this way the Singleton class is loaded, and the instance is not necessarily initialized.
Later, in Chapter 21, I show you how to do this,using the Singleton pattern and the Double-Checked Locking pattern.
To maintain the singleton guarantee, declare all instance fields transient and provide a readResolve method.
In languages, such as C++, other classes could delete the object instance,but doing so would lead to a dangling reference inside the Singleton class.
Item 3 describes the Singleton pattern and gives the following example of a singleton class.
If the Elvis class is made to implement Serializable,the following readResolve method suffices to guarantee the singleton property:.
Under this perspective, the singleton pattern is just a kind of service locator, e.g. Model. getInstance().
If separate threads of execution enter the Instance property method at the same time,more that one instance of the Singleton object may be created.
In this case, managing the singleton with modules like Cache::FastMemoryCache from CPAN may make more sense.
Separating the abstract concept from a particular implementation, as this patterns collection does,may make the Singleton implementation look surprisingly simple.
The singleton pattern isn't one of the most widely used ones, but we're starting here because it's relatively easy to grasp.
It still addresses the two basic problems that the Singleton pattern is trying to solve: global access and instantiation control.
To maintain the singleton guarantee, you have to declare all instance fields transient and provide a readResolve method(Item 77).
It is most often the case that the singleton should also be globally accessible, and this is achieved by making the creation method public.