Covariant and Contravariant Types made simple

https://medium.com/@EdwhardT/covariant-and-contravariant-types-made-simple-4ab6effb031b

bitbucket

Free for small teams + Unlimited private repositories
https://bitbucket.org/

12 tips to increase the performance of your ASP.NET application drastically – Part 2

http://www.infragistics.com/community/blogs/brijmishra/archive/2015/08/21/12-tips-to-increase-the-performance-of-asp-net-application-drastically-part-2.aspx

How to swap two numbers without third variable?

int first,second ;
first = 1;
second = 2;
first = first + second;
second = first - second;
first = first - second;

Practicing Programming

https://sites.google.com/site/steveyegge2/practicing-programming

Practicing to make skills better, no problem, but many Programming technologies are going away all the time.