Create/Use User-defined functions in System.Data.SQLite?

Question

User-Defined Functions & Collating Sequences Full support for user-defined functions and collating sequences means that in many cases if SQLite doesn't have a feature, you can write it yourself in your favorite .NET language. Writing UDF's and collating sequences has never been easier

I spotted this bit on the C# SQLite ADO.NET provider l found here, and was having problems understanding the documentation on how to implement/use user-defined functions.

Could anyone explain how to, or provide any working examples for this lost newbie?

Answer 1

Here's a great example by Robert Simpson on a REGEX function you can use in your sqlite queries.