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Euler Problem 14: Learn to Memoize

This is going to be fun. It’s a bit of LINQ, a bit of academic Computer Science, and a bit of meteorology. Euler Problem 14 concerns a sequence referred to as hailstorm numbers. Hailstorm number...

Posted 04 February 2010 03:48 PM by wwagner | 1 comment(s)

Filed under: LINQ, C#, C# General, DevCenterPosts, Euler

Long time, no Euler (or YAEPS # 13)

Well, it’s been a long time since I’ve taken the time to solve and blog about one of the Euler problems.  It was time to pick this up again. Problem 13 says: Work out the first 10 digits of the sum...

Posted 25 August 2009 11:15 PM by wwagner | 3 comment(s)

Filed under: LINQ, C#, C# General, DevCenterPosts, Euler

When Cast<T> doesn’t Cast to T

A friend asked me about some issues he was having using Enumerable.Cast<T>(). In his mind, it just wasn’t working. Like so many problems, it was working correctly, just not the way he expected. It...

Posted 22 July 2009 11:04 PM by wwagner | 2 comment(s)

Filed under: Effective C#, LINQ, C#, .NET General, DevCenterPosts

Book Review: Essential LINQ

During my recent vacation, I read the final print version of Essential LINQ , by Charlie Calvert and Dinesh Kulkarni. Normally, I try to answer the question, “Who should read this book?” That answer eluded...

Posted 13 July 2009 11:08 AM by wwagner | with no comments

Filed under: LINQ, C#, books, C# General, DevCenterPosts, BookReviews

Extension Methods and Null Arguments

A little while ago, I did a DNR TV on C# 3.0 . During that, I talked about preserving null semantics when  you write extension methods.  I made the point that you should never test if the first...

Posted 26 October 2008 01:00 PM by wwagner | 4 comment(s)

Filed under: Effective C#, LINQ, C#, C# General, DevCenterPosts

Euler Problem 10

Patrick posted his solution earlier this week. I figure it was time to add mine. Also, Octavio Hernandez pointed out in the comments to problem 8 that he had discussed similar code constructs in his blog...

Posted 31 August 2008 01:05 PM by wwagner | 2 comment(s)

Filed under: LINQ, C#, .NET General, C# General, DevCenterPosts, Euler

A Functional Programming Q & A

I received this question in email from one of my readers, and I thought it would be of general interest: I find myself with two arrays of the same size and I want to create a third that combines each element...

Posted 23 April 2008 10:00 PM by wwagner | 2 comment(s)

Filed under: LINQ, C#, C# General, DevCenterPosts

Project Euler: Problem 1

I am starting a new series. A friend recently pointed me at the Project Euler problems. You can see the project here: http://projecteuler.net/ As I finish them, I'll post an explanation of the problem...

Posted 25 March 2008 09:36 PM by wwagner | 7 comment(s)

Filed under: LINQ, C#, DevCenterPosts, Euler

Looking Inside C# Closures

If you're like me, you understand new language features better when you see what the new language features generate for you. Closures in C# are no different. There's quite a bit that goes on under...

Posted 22 January 2008 12:01 PM by wwagner | 5 comment(s)

Filed under: LINQ, C#, C# General, DevCenterPosts