DotNetKicks.com - Stories tagged with Singleton

Are Static Variables in Base Classes Shared In Derived Sub Classes?

Fri, 30 Jul 2010 09:26:52 GMT

Development Gotchas - Something that caught me out recently is the behavior of static variables in C# classes, and how they behave in derived classes. Also how does this differ with static variables in Generic<T> base classes? Finally, we use this understanding to create a generic base Singleton class.

Design Patterns - Generic Singleton Pattern

Tue, 15 Jul 2008 20:21:20 GMT

A little follow up from yesterday 's Singleton Pattern, where I asked for some help on how you would approach a generic singleton. With the help of Andrew Stevenson and ExNihilo, we came up with the following Generic Singleton Pattern.

Design Patterns - Singleton Pattern

Mon, 14 Jul 2008 22:00:13 GMT

Today we'll have a look at a well known pattern, the Singleton Pattern. Most people have already heard about this one. The definition: "Ensure a class has only one instance and provide a global point of access to it."

Static Singletons for ASP.NET Controls

Fri, 11 Jul 2008 12:23:09 GMT

When building generic ASP.NET Server controls that also provide a sort of API service to other custom controls or page level code, it's often necessary to ensure that only a single instance of a control exists, and that only that single instance of this control or component can be accessed in the context of an ASP.NET request. Using HttpContext and it's Item collection makes it easy to create reusable, cacheable instances and ensure you're only running a Singleton instance of it.

C# - Singleton Pattern vs. Static Classes

Thu, 03 Jul 2008 23:11:21 GMT

Problem: Store some common data in a singleton or static class about your program in an object array, which you store in a class. It saves state between usages and stores some caches, and must be initialized only once and shared in many code locations. Making a new object each time would be expensive.

Singletons are boring, hence factor out the concern (with a twist)

Tue, 29 Apr 2008 23:57:13 GMT

The umpteenth pattern to singletons...I know you've seen it by the gross ton. Anyway, I just wanted to add a twist with the implicit operator and here you find the result.

C# singleton snippet

Wed, 16 Apr 2008 05:01:01 GMT

I've decided to stop the copy-paste madness. Not that I use singletons so very often, but still - It never changes, so lets use a snippet.

C# singleton snippet

Wed, 16 Apr 2008 05:01:01 GMT

I've decided to stop the copy-paste madness. Not that I use singletons so very often, but still - It never changes, so lets use a snippet.

Singleton C# code snippet

Mon, 21 Jan 2008 03:45:15 GMT

A complete documented and attributed singleton C# code snippet. Highly recommended. 5 key-strokes for a singleton.

What's wrong with this code? #1 - Discussion

Mon, 16 Jul 2007 11:46:01 GMT

Discussion over the thread-safe singleton snippet presented in "What's wrong with this code? #1"

How to Use the Singleton Pattern and the Garbage Collector to Manage a

Mon, 14 May 2007 09:31:01 GMT

Here's an easy to minimize the overhead of an expensive resource, such as an image or a network connection, using the singleton pattern and some simple hints to the garbage collector.

When is a singleton not a singleton? Serialization!

Fri, 04 May 2007 12:31:01 GMT

How to prevent a singleton class to be instantiated multiple times when deserialized.

.NET interview question - when is a singleton not a singleton

Sun, 29 Apr 2007 19:30:30 GMT

A tricky interview question about duplicated singleton instances.

ASP.NET Singleton-per-Page pattern

Mon, 23 Apr 2007 13:16:02 GMT

Implementing a singleton-per-page ASP.NET pattern.

Design Patterns: Thoughts on the Singleton Pattern

Thu, 15 Mar 2007 13:16:02 GMT

Thoughts on the Singleton Pattern (Executive summary: Don't!)

.NET Remoting Use-Cases and Best Practices

Tue, 13 Mar 2007 17:46:02 GMT

Most people who don't know me personally assume that I value .NET Remoting above all other means of developing distributed applications. They might also assume that I'll use Remoting as a catch-all solution to any distributed application.

Singleton - the most overused pattern

Fri, 09 Mar 2007 09:01:01 GMT

The innocent little singleton in your middle tier is not so innocent after all. This article discusses the design issues inherent in unwisely using the Singleton Design Pattern. In particular it discusses the kind of concurrency and scalability issues that arise from use of singleton in high-use, concurrent applications. It also suggests alternative designs that should be used for business logic classes.

The ASP.NET Singleton-per-Request pattern

Mon, 21 Aug 2006 12:31:01 GMT

Implementing the Singleton pattern applied to the Request-Response pair in ASP.NET

PrestonLee.com - Singletons Cause Cancer

Sat, 15 Jul 2006 01:04:35 GMT

Singletons can be hazardous to your health, seriously jeopardize your family's safety, and have been classified as "terrorist patterns" by the U.S. government. The fact that an application only needs one instance of something does not mean the object should be designed that way, and there aren't very many scenarios where singletons are appropriate. Do as the Jedi do and use them with consideration and responsibly.