Rob’s Blog

My desktop goes to sleep after 1 hour of idling. When it wakes, the network adapter is pretty grouchy! Post nap network performance for file shares hosted by the desktop is absolutely terrible and completely ineffective. Installing the latest drivers didn’t help.

Disabling and enabling the adapter does help. Manually reseting a network adapter in Vista, however, gets tired (pun intended) real fast.

Thanks to this post from David Aiken, when my desktop awakes from a power nap, I revive the network with a power script!

Posted by Rob under .Net | No Comments »

So far I’ve bought into the “All of C# 3.0’s new language features are just syntatic sugar” view. Today I realized that this sugar has some kick to it.

If Lambda Functions are syntatic sugar, then Expression Trees are habanero peppers.

A lambda function is a new way to declare an anonymous delegate, which is effectively a function pointer. Lambda functions are compiled into executable code.

Expression Trees are data structures that contain descriptions of lambda functions. They convert your code into data. Somewhere down the road in your application a block of code will call Compile() on the expression tree to get a reference to the lambda function and then call Invoke() to execute the lambda.

I found these articles helped me understand Expression Trees:

• C# 3.0 and LINQ - Expression Trees
• Expression Trees in C# 3.0

Expression trees are used heavily by Linq and Linq to Sql. It’s important to understand Expression Trees if you want to develop your own Linq IQueryProvider, which is not a trivial task!

Posted by Rob under .Net & Development | 1 Comment »