Notes on software and the ideas behind it

Find the meaning
behind the code.

I’m Fred Yang. I write about software—how it works, why it behaves the way it does, and the ideas that make code easier to reason about.

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Working notes / 2026

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Architecture, reactivity, and the hidden relationships that shape frontend systems.

xsd

xsd type inheritance

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InfoPath

Enable InfoPath intellisense in VS.NET IDE

C:\>copy "C:\Program Files\Microsoft office\Office12\Microsoft.Office.InfoPath.x ml" "C:\WINDOWS\assembly\GAC_MSIL\Microsoft.Office.InfoPath\12.0.0.0__71e9bce111 e9429c"
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WF

Workflow in WSS3 notes

Because not all the activities availabe in vs.net 2005 designer for windows flow foundation are relevant in the context of SharePoint sites, Windows Sharepoint Server supports a subset of the availabe activites. This include...
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SharePoint

Your search cannot be completed because this site is not assigned to an indexer wss3

Go to SharePoint Central Administration > Application Management > Content Databases (Underneath SharePoint Web Application Management). Select the correct SharePoint web application – click on the name of the Content databases  - this will open...
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WF

Core workflow services

Scheduling : Creates and manages the threads used by the runtime engine to execute workflow instances.
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