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  • Blog Post: Video on Linq Queries and Delayed Evaluation

    I recently recorded a video with Charlie Calvert about Linq queries and delayed evaluation . You can find it here (streaming video). Download it here.
  • Blog Post: About Queries

    This concludes my series of posts about queries. I will still discuss them occassionally and if anyone has any specific questions then I would be very glad to address them. Query Expression Posts 1. Comprehending Comprehensions What are queries? How are queries treated by the compiler? 2. Transparent...
  • Blog Post: Another Model for Query Interpretation

    An imperative model for interpreting Linq to Objects queries has already been discussed , but are there any other models or method for interpreting queries? It turns out that there are other models. Linq to SQL queries operate in a completely different manner. In the discussion about Linq to Object queries...
  • Blog Post: Having Trouble with Queries

    A Funny Joke and a Sad Joke There is a joke that goes something like this: Two men are hopelessly lost in hot air balloon. Their condition is aggravated by the fact that they are enshrouded by a thicket of fog. When it seems all is lost, suddenly the fog parts and miraculously a man is standing on the...
  • Blog Post: How Linq to Objects Queries Work

    If you have ever tried to step through a Linq to Objects query in the debugger, you may have been mildly surprised at the results. It may have seemed as if the program had a mind of its own and ran certain expressions when it wanted to and not when it was supposed to. Be assured, it is doing the right...
  • Blog Post: A Model for Query Interpretation

    Evaluating Query Expressions After writing the code to translate query expressions and remove transparent identifiers, one of my first desires was to write a tool that would generate query expressions to test the correctness of the code. Of course, I already had a set of programmer tests in place...
  • Blog Post: Reading and Writing Queries

    Now that we have discussed some of the underpinnings of query expressions, we can turn our attention to how to use them. As has already discussed , most people who see query expressions immediately think of SQL and often even mistake query expressions for embedded SQL. While it is true that there is...
  • Blog Post: Thus Quoth the Humble Programmer

    I love Scheme! It is such a beautiful language. I was first introduced to it during college. At that time, I thought it was an interesting language but I didn't see the power of the language until later. That moment came when I experienced reading The Structure and Interpretation of Computer Programs...
  • Blog Post: Transparent Identifiers

    My last post described in detail how query expressions in C# are translated, but I have a confession to make. I did a little bit of hand waving through one part of the translation rules. The astute reader (whomever that is, whenever I read such things I always wonder, "Am I that astute reader?") may...
  • Blog Post: Comprehending Comprehensions

    Not long ago, I was reading through some articles posted on programming.reddit.com when I came across an article claiming that C# is trying to be a dynamic language . One user posted a comment that mentioned that C# 3.0 included among other things "embedded SQL". Unfortunately, it seems that there is...
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