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  • Reader Challenge – Fault Handlers in C#

    The CLR’s exception handling facilities provide for protected blocks (“try”) one can associate a handler with. There are four kinds of handlers, and exactly one can be associated with a protected block (but nesting can be used to associate multiple handlers with a block of code): A finally handler is...
    Posted to B# .NET Blog (Weblog) by bart on 12-06-2009
  • Type-Free Lambda Calculus in C#, Pre-4.0 – Defining the Lambda Language Runtime (LLR)

    Introduction A while back, I blogged about (Mis)using C# 4.0 Dynamic – Type-Free Lambda Calculus, Church Numerals, and more which was a fun post and got some good feedback and solid reading numbers. So, let’s continue our journey of brain-exploding theoretical foundational posts with “The Revenge of...
    Posted to B# .NET Blog (Weblog) by bart on 08-30-2009
  • LINQ and The Matrix – Introducing MLinq

    Today we’ll take a look at project “MLinq”, a very simple way to perform symbolic matrix calculations based on LINQ expression trees.   Introduction But first, why would you even want to do this? Let me tell you I’m a big believer of the power of mathematical notation. Say you’ve been asked to write...
    Posted to B# .NET Blog (Weblog) by bart on 02-10-2009
  • The Return of the Pattern Matcher - Sample Code Available

    It's been a while since I continued my series on a functional pattern matcher in C# . I finally found some time to extract the simplified pattern matching code from the bigger project I'm working on and cook up a downloadable documented sample. Without further delay: here it is . It contains...
    Posted to B# .NET Blog (Weblog) by bart on 04-26-2008
  • Pattern Matching in C# - Part 8

    In the last handful of posts in this series we've been looking at ways to match a whole set of patterns, including: Constants Objects Lists and arrays Dictionaries There's not that much left to apply (meaningful) matches for (feel free to think of others of course) so from this post on, we'll...
    Posted to B# .NET Blog (Weblog) by bart on 04-16-2008
  • Pattern Matching in C# - Part 7

    In our last encounter on the pattern matching mission we covered techniques to match T[] and List<T>. Today we cover another type that's being use a lot: dictionaries (the generic brothers of Hashtable which you could match too, exercise ). I've already shown an example of such a match...
    Posted to B# .NET Blog (Weblog) by bart on 04-15-2008
  • Pattern Matching in C# - Part 6

    Monday morning: The Return of The Pattern Matcher. After an awesome weekend (well, a Saturday at least) plenty of sun here in Seattle, we'll dive into even more pattern matching fun. This time around we'll investigate ways to match collections. Last time we wrapped our heads around ways to match...
    Posted to B# .NET Blog (Weblog) by bart on 04-14-2008
  • Pattern Matching in C# - Part 5

    Remark: Some readers have asked me for the sources of all this magic. Since this series is based on an extraction from a bigger project and I'm composing the decoupled (and slightly simplified) pattern matcher as I'm writing these blog posts, the source isn't in a publishable condition yet...
    Posted to B# .NET Blog (Weblog) by bart on 04-11-2008
  • Pattern Matching in C# - Part 4

    Last time around in this series we won the battle of performance, going all the way from an interpreter-driven pattern matcher to a fully on-the-fly compiled one, with great results almost reaching the performance of a manual implementation. However, functionality-wise our pattern matcher is rather restricted...
    Posted to B# .NET Blog (Weblog) by bart on 04-10-2008
  • Pattern Matching in C# - Part 3

    Welcome back beloved pattern matchers! In our last encounter we moved from closed to open pattern match objects in order to allow for reuse, improving the performance of our pattern matcher quite a bit. But we're not done yet: today we'll build upon our open pattern match and provide a way to...
    Posted to B# .NET Blog (Weblog) by bart on 04-09-2008
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