Code/Implentation for System.Collections.Generic.Dictionary
Source code for System.Collections.Hashtable.Insert(Object, Object, Boolean)
.NET Implentation of Common data structures that you can download for free and even contribute to the project if you like (open source). Includes Sorting Algorithms, Trees, Graph algorithms, Matrix implementation, Vectors, Queues, and Lists.
How to find out if a record exists in a table efficiently using the IF EXISTS keyword, and 2) How to test and optimize two queries to see which is faster using SQL Server Management Studio. Includes screenshots