Category Archives: C#

I thought I know how the foreach construct worked under the covers. I figured the compiler would check if the type being iterated over implement IEnumerable or IEnumerator.  And if so it will call MoveNext and Current to loop over … Continue reading →

Both ArgumentNullException and ArgumentException have a constructor which takes two strings.  One is the name of the parameter (or argument) in question and the other is a string describing the exception. The funny/odd/interesting thing about them is that one has … Continue reading →

What do you think the following code will do? Compile time error Run time error Work fine 1: static void Main(string[] args) 2: { 3: int x = 10; 4: int y = 5; 5: Swap(ref x, ref y); 6: … Continue reading →

I just finished reading the series of ten blog posts by Eric Lippert about covariance and contravariance.  These topics were new to me but after reading this blog series it all made sense.  It finally explained to me why some … Continue reading →

In my last post I talked about a Stream class for creating efficient lazy lists in C#.  In addition, I showed several classic functional methods I ported to C# to be used on the lazy lists.  As I mentioned in … Continue reading →

One of the most interesting aspects of the Haskell language is the fact that features lazy evaluation.  My interest in lazy evaluation led me to a post on Wes Dyers blog about lazy lists in C#.  In his blog post … Continue reading →

With the addition of anonymous delegates in C# 2.0 and with lambda expressions in C# 3.0 you might have been hearing a lot about variable capturing.  This is the mechanism in which the delegate/lambda which was defined inline is able … Continue reading →

Did you know that you can call a generic method with out supplying the type argument.  The C# compiler will fill in the type parameter for you at compile time since the language is strongly typed. static void MyMethod<S>(S myParam) … Continue reading →

With the release of C# 3.0 and Visual Basic 9, both languages added support for lambda expressions. Lambda expressions form the basis of lambda calculus which (this will seem a bit mathy) is a formal system which is used to … Continue reading →