Smart Code

Reinventing the Validation Wheel

Submitted by Bevan on Wed, 16/11/2011 - 19:37

A comment by SaltySeaDog over on my post Easier property validation with dynamic in C# 4 got me thinking.

You have some special use case that requires you to reinvent that wheel?
There are several wheels around - http://fluentvalidation.codeplex.com/ just to name one... or are you just prototyping for it's own sake?

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Easier property validation with dynamic in C# 4

Submitted by Bevan on Sat, 27/08/2011 - 12:42

High quality input validation is essential to many, if not all systems that we write. It doesn't matter whether we're validating user input in a WPF or Silverlight application, checking data transfer objects passed into a service layer or verifying the information in a JSON packet submitted by REST, validation is essential.

Lately, I've been working with a bunch of code that looks like this:

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Elegant.Data

Submitted by Bevan on Tue, 19/10/2010 - 19:17

Over on The Codeface, Mark Rendle has a very interesting idea: Simple.Data

To achieve the same task with Simple.Data, you can do this:

var db = Database.Open(); // Connection specified in config.
var user = db.Users.FindByNameAndPassword(name, password);

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MoreLINQ

Submitted by Bevan on Wed, 15/09/2010 - 18:09

I just stumbled across this - a very useful extension LINQ library called MoreLinq.

The list of extensions that it provides includes some real gems:

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Avoiding Null Checks

Submitted by Bevan on Mon, 13/09/2010 - 15:31

Courtesy of a link tweet from Ayende and a blog entry on DevTalk.net, here's an interesting way to avoid null checks in code: the .With() extension method.

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