Moserware

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Back from the Future Bugs 21 Oct 2015
(In honor of this quasi-historic day , I wanted to share my most memorable bug.) Ordinary software bugs are merely annoying but straightforward to find and fix. Legendary bugs are the ones that actively resist being found and make you question your sanity for prolonged periods…
Life, Death, and Splitting Secrets 21 Nov 2011
( Summary : I created a program to help back up important data like your master password in case something happens to you. By splitting your secret into pieces, it provides a circuit breaker against a single point of failure. I’m giving it away as a free open source program with…
Notes from porting C# code to PHP 26 Oct 2010
( Summary : I ported my TrueSkill implementation from C# to PHP and posted it on GitHub . It was my first real encounter with PHP and I learned a few things.) I braced for the worst. After years of hearing negative things about PHP, I had been led to believe that touching it…
Computing Your Skill 18 Mar 2010
Summary : I describe how the TrueSkill algorithm works using concepts you’re already familiar with. TrueSkill is used on Xbox Live to rank and match players and it serves as a great way to understand how statistical machine learning is actually applied today. I’ve also created…
A Stick Figure Guide to the Advanced Encryption Standard (AES) 22 Sep 2009
(A play in 4 acts. Please feel free to exit along with the stage character that best represents you. Take intermissions as you see fit. Click on the stage if you have a hard time seeing it. If you get bored, you can jump to the code . Most importantly, enjoy the show!) Act 1:…
Just Enough MBA to Be a Programmer 20 Jul 2009
There’s that awkward moment in your software development life when you realize that most of the people in your company aren’t programmers. Scanning your address book reveals Marketing, Sales, Accounting, Human Resources, and yes, the “business people” with their Masters of…
The First Few Milliseconds of an HTTPS Connection 10 Jun 2009
Convinced from spending hours reading rave reviews , Bob eagerly clicked “Proceed to Checkout” for his gallon of Tuscan Whole Milk and… Whoa! What just happened? In the 220 milliseconds that flew by, a lot of interesting stuff happened to make Firefox change the address bar…
Using Obscure Windows COM APIs in .NET 24 Apr 2009
Most native Windows APIs are simple to call from .NET. For example, if you need to do something special when showing a window, you can use the ShowWindow API using Platform Invocation Services (P/Invoke) like this: [DllImport("user32.dll")] static extern bool ShowWindow ( IntPtr…
How .NET Regular Expressions Really Work 16 Mar 2009
Remember when you first tried to parse text? My early BASIC programs were littered with IF statements that dissected strings using LEFT$ , RIGHT$ , MID$ , TRIM$ , and UCASE$ . It took me hours to write a program that parsed a simple text file. Just trying to support whitespace…
Rebooting Computing: Why? 03 Feb 2009
Have you seen “ The Most Famous Chart in Computer Science Education ?” The exact numbers and data sources vary, but the curve always looks similar: I used data from college bound seniors who indicated on their SAT that they intended to major in “Computer and Information Sciences…