July 2010 - Posts

• Introduction to open instance delegates

  Posted Wednesday, July 28, 2010 12:15 AM | 0 Comments
  
  

  Creating a delegate to a method is normally quite a cheap operation. However, there are some reflection-based situations where you have to create a delegate dynamically using Delegate.CreateDelegate. As you can expect, such a method is many times slower Read More by Simon Cooper | 0 Comments | Comment on this post

• Implementing method override covariance on C# (Part 3)

  Posted Monday, July 19, 2010 11:30 PM | 1 Comments
  
  

  To recap from my previous post, we're trying to create a class that has the same behaviour as an explicit interface implementation, in which we can change the return type to a more specific type, but for class overrides instead of interface implementations. Read More by Simon Cooper | 1 Comments | Comment on this post

• Implementing method override covariance on C# (Part 2)

  Posted Friday, July 16, 2010 9:50 PM | 0 Comments
  
  

  So, C# doesn't allow us to change the return type when overriding methods. Could we do it in IL? For reference, here is a C# version of the initial example in my previous blog post, and the resulting IL class & method signatures generated by the Read More by Simon Cooper | 0 Comments | Comment on this post

• Implementing method override covariance on C# (Part 1)

  Posted Wednesday, July 14, 2010 10:23 PM | 0 Comments
  
  

  It has been said by many people that C# is 'Java done right' - it has many features that Java has, but implemented in a more sensible fashion. However, there is one feature not included in C# that I do miss from my time in Java. Read More by Simon Cooper | 0 Comments | Comment on this post