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Friday, May 08, 2009 1:34 AM

Central piece of code as a cornerstone for a tool

Sometimes, the idea of a tool could gravitate around a very simple piece of code, an enabling mechanism that gives life to a much larger functionality. That is the case of a simple tool I am writing for my own use. It is an application, based on Windows
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Sunday, April 19, 2009 10:25 PM

LINQ Samples

Visual C # — 101 LINQ Samples Visual Basic.NET — 101 Visual Basic LINQ Samples
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Sunday, March 29, 2009 10:53 PM

Know your design tools — The Singleton case

A professional software designer —one whose next paycheck depends on the quality of her software— looks for an ever increasing acquaintance with his design tools. One of the most important design tools in software is the actual computing machine —abstract,
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Friday, January 18, 2008 7:56 AM

Stepping into base class libraries of .NET Framework while debugging

Here are some pieces of information about stepping into base class libraries of .NET Framework while debugging: Configuring Visual Studio to Debug .NET Framework Source Code by Shawn Burke Debugging into the .NET Framework Source by James Kovacs
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Sunday, June 24, 2007 9:15 AM

COM+ object per client model

Consider the following ECMAScript: var mather=new ActiveXObject("Arithmetic.Math") WScript.Echo(mather.Sum(5,5)) WScript.Echo(mather.Sum(5,5)) Output is: 10 twice. No brainer. Arithmetic.Math could be an in-process (loaded in the same process of COM Client),
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Sunday, March 11, 2007 10:49 AM

Execution order between base and derived inline instance field initializers

Talking C # , what is an instance field initializer? Here are two: class T { private int afield = 1024 ; private StringBuilder anotherfield = new StringBuilder() ; } Now, consider the program below, What would the output be? class B { public B(int n){Console.WriteLine(n);}
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Saturday, January 13, 2007 4:00 PM

Do you amass nasty feelings about your designs?

I remember the time when structured programming lessons first came into my attention. Control flow constructs like sequence, choice, loops, etc. In particular, the condition-controlled loop that places the condition test after the loop body, for example
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Saturday, December 02, 2006 9:50 AM

Recursive functions

My young nephew came with a question about recursive functions, after a few minutes, he fully understood these samples: #include <stdio.h> /* 0! = 1 1! = 1 3! = 3*2*1 = 6 5! = 5*4*3*2*1 = 120 3! = 3*2! = 3*(2*1!) = 3*[2*(1)] = 3*(2*1) = 3*2*1 =
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Tuesday, September 26, 2006 12:08 PM

Anonymous method trivia

Consider the following C# 2.0 code: using System.Windows.Forms; class form:Form { form() { int msg=100; Button b=new Button(); b.Text="click"; b.Click += delegate{MessageBox.Show("now the value is:"+msg);}; Controls.Add(b); Load += delegate{msg=200;};
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Tuesday, September 26, 2006 10:25 AM

A more efficient iterator pattern implementation since C# 1.0

Yes, there is CLR 2.0 now, with C# 2.0 generics and iterators. Yet, the more design tools for your professional designer’s toolbox, the better. Implementing global::System.Collections.IEnumerable and global::System.Collections.IEnumerator implies some
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Saturday, September 16, 2006 7:46 PM

What are pointers?

Today, my young nephew came to me with the question "What is that thing called 'pointers' in the C programming language?" from his first programming course at school. The time has come to see if he was born with that part of the brain that understands
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Monday, September 04, 2006 11:36 PM

The attention where it belongs (and it is not in the marketing hype)

Reading the following article was refreshing, there are conscious software professionals that this industry can rely on like Mr. Dave Thomas: Agile Evolution - Towards The Continuous Improvement of Legacy Software by Dave Thomas http://www.jot.fm/issues/issue_2006_09/column
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Wednesday, August 30, 2006 9:22 PM

The source of many design and programming problems: unchecked assumptions

In a recent project, we faced a problem with our system. We just found and resolved the problem. Details aside, there is a root cause of the problem: unchecked assumptions. Save you time and effort and ask yourself often "Which are my assumptions so far?"
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Thursday, July 13, 2006 1:29 AM

A test-driven design style for database-based applications with VSTS

If you are designing an application test-drive using Microsoft Visual Studio 2005 Team Edition for Testers whose logic includes access to a database, then consider the following mechanism for the database related assertions (also known as specifications:
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Sunday, June 25, 2006 12:30 PM

Designing scalable systems

This is an important work for the Spanish software development community, the issues involved with scalability are cleary explained, and their solutions. Enjoy: http://dixi.members.winisp.net/escalabilidad/
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