John Liao's Blog

#mytable { width: 700px; padding: 0; margin: 0; } caption { padding: 0 0 5px 0; width: 700px; font: italic 11px "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif; text-align: right; } th { font: bold 11px "Trebuchet MS", Verdana, Arial, Helvetica, sans-serif; color: #4f6b72; bo...

I was reading through Juval Löwy's Programming WCF Services book and wondering if I should do a series of WCF blog posts in F# based on Löwy's book when I ran into a common construct found in C# programs. That construct looks something like the following C# code:...

I was reading through Juval Löwy's Programming WCF Services book and wondering if I should do a series of WCF blog posts in F# based on Löwy's book when I ran into a common construct found in C# programs. That construct looks something like the following C# code:...

A developer came to me the other day asking for help in diagnosing some issues with their application and the interaction with Oracle's Coherence product. I wanted to write some testing harness to quickly test some Coherence configuration and gave some thought about how I would go and try to...

A developer came to me the other day asking for help in diagnosing some issues with their application and the interaction with Oracle's Coherence product. I wanted to write some testing harness to quickly test some Coherence configuration and gave some thought about how I would go and try to...

Recently, I got to work with SharePoint 2007 again and I revisited a previously written blog Exploring SharePoint 2007 Object Model with F#. In that blog, I complained about the fact that SharePoint collections did not implement IEnumerable, causing me to implement a type specific collection...

Recently, I got to work with SharePoint 2007 again and I revisited a previously written blog Exploring SharePoint 2007 Object Model with F#. In that blog, I complained about the fact that SharePoint collections did not implement IEnumerable, causing me to implement a type specific collection...

My coworker approached me the other day and ask what open source log analysis tools would I recommend. I personally do not have much experience with a general purpose open source log analysis tools so I would have probably recommended him to take a look at Splunk. Since I've recently written a...

My coworker approached me the other day and ask what open source log analysis tools would I recommend. I personally do not have much experience with a general purpose open source log analysis tools so I would have probably recommended him to take a look at Splunk. Since I've recently written a...

I am often pulled into investigative teams to resolve performance issues. In one particular instance, I was involved in troubleshooting a Java-based batch job that had experience performance issue after it migrated from an older database platform to a newer database platform. Typically in these...

I am often pulled into investigative teams to resolve performance issues. In one particular instance, I was involved in troubleshooting a Java-based batch job that had experience performance issue after it migrated from an older database platform to a newer database platform. Typically in these...

Encryption is one of those library that I use infrequently. It seems that every time I need to work with some encryption algorithm, it passes memory expiration date of my last implementation usage of some encryption algorithm. Recently, I had to implement some password encryption tool in Java...

Encryption is one of those library that I use infrequently. It seems that every time I need to work with some encryption algorithm, it passes memory expiration date of my last implementation usage of some encryption algorithm. Recently, I had to implement some password encryption tool in Java...

Recent changes in my day job have sidetracked me from doing much development or working with F#. However, to prevent myself from getting rusty with F# development, I decided to pick up the book Visual C# 2010 Recipes by Allen Jones, Adam Freeman, Matthew MacDonald, and Rakesh Rajan and randomly...

Recent changes in my day job have sidetracked me from doing much development or working with F#. However, to prevent myself from getting rusty with F# development, I decided to pick up the book Visual C# 2010 Recipes by Allen Jones, Adam Freeman, Matthew MacDonald, and Rakesh Rajan and randomly...

I recently had to implement some self hosted workflows on WF that leverages WCF for inter-process communication.  I’ve found the book Learning WCF by Michele Bustamante helpful for learning and implementing WCF parts of the code and Pro WF by Bruce Bukovics useful for implementing the...

I recently had to implement some self hosted workflows on WF that leverages WCF for inter-process communication.  I’ve found the book Learning WCF by Michele Bustamante helpful for learning and implementing WCF parts of the code and Pro WF by Bruce Bukovics useful for implementing the...

I recently received an invitation from Martin Szummer to take a look at the DataGrid control that's part of the WPF Toolkit. That got me curious and I quickly mocked up some code to start exploring the DataGrid with some F# script. Here's is the F# script that I'm using to explore this control:...

I recently received an invitation from Martin Szummer to take a look at the DataGrid control that's part of the WPF Toolkit. That got me curious and I quickly mocked up some code to start exploring the DataGrid with some F# script. Here's is the F# script that I'm using to explore this control:...

Recipe 3-15 of the book Silverlight 2 Recipes illustrates handling keyboard input.  The code is suppose to allow you to move a spinning ball with the directional keys.  When I initially implement it, I ran into some issues in trying to capture keyboard input. As I understand keyboard...