Discovering coding pearls

I got to use WCF callbacks recently and realized some of it's gotchas , which are listed here: Callbacks requires communication over duplex channel Requires all clients to implement the callback interface, exposed by the service BasicHttpBinding & Read More...

Just to be clear, there are 5 types of a SQL joins: Cross-join or Cartesian Product - Joins all rows from one relation with rows from the other relation Inner join - Joins only those rows that have same data in the common attributes of the two relations Read More...

If you install Visual studio 2008 while the 2005 version exists, and you have a website project that uses ajax, you're bound to run into the following issue: You'll see an error saying: "Ambiguous reference of System.UI.Web.Extensions.dll found" . And Read More...