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

Recently mapped

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

svn

SVN rename

svn move read2.txt .\read4.txt
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svn

SVN basic work cycle

Update your local working copy(svn update)
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svn

SVN Recommended Repository Layout

It's a good practice to create one repository for the entire company or department and store all your projects in this repository. Creating separate repository for each project is not a good idea because...
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WF

EventHandlingScopeActivity

The EventHandlingScopeActivity is a dramatically different type of event handling activity. It has two discrete sections: a main line child activity and a set of event handling activities. The single main line child activity...
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Network

Profile and Folder Redirection

This article tells me how to setup Profile and Folder Redirection. By default, a profile include redirectable folders which includes Application Data, Desktop, My Documents, and Start Menu. So when you redirect profile withou...
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