Functions have a given number of arguments which define the arity of the function. The process of producing another function by setting any number of arguments to a function is known as partial application. C# developers are most familiar with this concept by calling one method from a more specific method, thereby adhering to the DRY principle.
The context most people hear about partial application is with functional programming. Methods are procedures or functions associated with a class, and that’s why many functional techniques are applicable in the object-oriented world. In C#, most people
associate functional programming with anonymous functions
What I think may be a more compelling case is that sometimes you need to pass functions with a specific signature, and the best way to achieve that signature is to apply known information. This is powerful in systems that dynamically create and consume functions (business rules), and it simplifies the passing of data as functions carry requisite values....(Read whole news on source site)
Some time ago I coined the phrase "Mice Like Green Cheese", so that I could remember which colour PS2 socket the mouse plugged into. Once that is remembered, it obvious that the purple one is for the keyboard.
A Visual Studio add-in makes it easy to view changes to your code in different browsers.
This post is an updated tutorial on how to use the Update/Delete/Insert Templated datagrid of the MVC Controls Toolkit. It contains information already published in previous tutorials updated to the new versions of the MVC Controls Toolkit. The full code used in this tutorial can be found in the Mvc3 Razor folder of the zipped file BasicTutorialsCode here Our Data model is simply a Todo List with three fields: Name(varchar), Description(varchar) and DueDate(date), plus the principal key id of type identity. As first step we define the Database, and a table named ToDo
with the previous four fields. Then, we create an entity framework model based on this database. After it is time to create a MetaClass to handle the constraints on our ToDo items. Let say that the DueDate can range from 3 months before today to 6 months after today Since today is not a definite value such constraints can not be interpreted as a Data Layer constraints, thus its natural place is not together with the other dataconstraints of the data layer. We will take care of it in a few minutes! First let take care of the the...(Read whole news on source site)
Why has the actor model not succeeded?:
The idea of asynchronous message passing may cause problems with certain programs or algorithms. For example, manipulation of a stack-like structure using asynchronous message passing could be problematic if the messages do not arrive in the correct order. When an actor requires a reply message from another actor, it is known as an insensitive actor, and will not process any further messages in its mail queue until it receives that reply. While being conceptually elegant, this is hard to implement efficiently, because the actor’s one message queue must
handle both the reply message and new messages from elsewhere.
Object-orientated programs also rely on message passing to a degree, but with the use of strong typing and static resolving, the number of dynamic method invocations requiring a message can be reduced substantially. This is much more difficult using actors. The actor model also uses many more actors than the object model uses objects for equivalent functionality, because in the actor model even an integer is represented as an actor....(Read whole news on source site)
Sessions - Øredev 2011:
With multi-core processors in all desktop computers and nearly every mobile device, developers must use asynchronous operations and concurrency to create responsive applications. The Actor programming model is an increasingly popular method of achieving the scalability without the impact to productivity that is inherent using traditional concurrency approaches. Stact is a library that enables C# developers to leverage the power of Actors, bringing the simplified concurrent programming to .NET.