As I was trying to finish up my C# implementation of Try[A] for Scando, I ran into some LINQ issues. Or at least I thought I did. Using the LINQ syntax kept failing to call my extension methods and instead … Continue reading
Yesterday I posted the question "Is there a way to Memorize or Materialize an IEnumerable?" on stackoverflow, hoping that there was already a built in way in the BCL. The answers and comments showed, that there wasn't but also challenged … Continue reading
This weekend has been a hack-a-thon, trying to build a simple linq provider for MongoDB. I’m using Sam Corder, et al.’s excellent C# MongoDB Driver as the query pipeline, so my provider really is just a translator from Linq syntax … Continue reading
One of the cool things with Linq is that queries are composable, i.e. you can add further query constraints by selecting from an existing query. Nothing is executed until you try to read from the query. This allows IQueryable to … Continue reading
Been using NHibernate a lot recently, and just love having POCO data objects. This means that i can just hand out objects and manipulate them and then save them back to the DB without ever exposing my persistence model. For … Continue reading
Currently working on a tag query engine and couldn’t find anything all that useful in the published approaches. I want to do arbitrary boolean algebras against a set of tags in a database, which seems to be out of scope … Continue reading
A while back, I wrote about searching through a tree using linq to objects. That post was mostly snippets of code about delegates, lambda’s, yield and how it applies to linq — more a technical exploration than an example. So … Continue reading
Indexing on db4o is a bit non-transparent, imho. There’s barely a blurp in their Documentation app and it just tells you how to create an index and how to remove it. But you can’t easily inspect that one exists, or … Continue reading
After failing to get a cross-platform sample of NHibernate/Sqlite going, I decided to try out Db4o. This is for a simple, local object persistence layer anyhow, nothing more than a local cache, so db4o sounded perfect. The initial DLLs for … Continue reading
Just came across a long discussion about LINQ in Java on the ODBMS blog (thanks to Miguel‘s tweet). There is some excellent discussion in there, but aside from a couple of people the discussion seemed to largely center on It’s … Continue reading