In my previous post I used the IObservable<T>.Zip extension method in the Drag-and-Drop example, which takes two observable collections and runs a function over them to return a new observable collection of potentially a different type. But what if you just want to simply merge the two observable collections into one stream? Well, Rx API …
As you may have read about on numerous MVP’s blogs already, there’s an ongoing research project at Microsoft’s DevLabs called Reactive Extensions for .Net (Rx) which introduces a push-style duality (equal and opposite) of the traditional pull-style enumeration using Linq. Erik Meijer gave a 30 mins introduction to the reactive framework in this video, I …
Linq Over Events – Playing with the Rx Framework Read More »
And here’s the full example with a method to check whether an IP address is local: http://www.csharp-examples.net/local-ip/
To get the value of a private field of an instance in C#: Similarly, you can quite easily retrieve the value of a const or static field for a type, simply replace BindingFlags.Instance with BindingFlags.Static and call GetValue with null:
Whilst fishing around StackOverflow for interesting discussions I came across this question on which programming paradigm is best for which job. There were some interesting arguments put forward, and after doing some more reading here are the two things I took away: Language != Paradigm What paradigm (procedural, OO or functional, etc.) you choose to program …
The term ‘duck typing’ is often used to describe a type of dynamic typing in programming languages where the object’s current set of methods and properties determines the valid semantics. Why? duck test – If it looks like a duck, swims like a duck and quacks like a duck, then it probably is a duck
As you’re probably aware of already, LINQ comes in two flavours – using Lambda expressions and using SQL-like query expressions: Both yields the same result because query expressions are translated into their lambda expressions before they’re compiled. So performance-wise, there’s no difference whatsoever between the two. Which one you should use is mostly personal preference, …
In the last couple of days or so I have spent some time reading Karl Seguin’s excellent and FREE to download ebook – Foundations of Programming which covers many topics from dependency injection to best practices for dealing with exceptions. The main topic that took my fancy was the Back to Basics: Memory section, here’s …
If you’ve used events in C# before, you’ve probably written code like this too: This is perfectly ok and normal to do, but can quickly become tiresome if you have to fire events in multiple places in your code and have to do a null reference check every time! So instead, I have been using …
Pattern for dealing with null handler for events in C# Read More »
Over the last couple of days I have read a number of blogs on the topic of covariance and contravariance, a new feature to be introduced in the upcoming C# 4.0 release. Whilst most of the blog posts were happy to provide a detailed account of what these terms mean and provide some simple examples, …
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