Chapter 17. Release Line

Release Line

Photo by Jack Delano. Library of Congress, Prints & Photographs Division, FSA-OWI Collection, Reproduction Number: LC-USW3-014014-E.

Freight operations on the Chicago and Northwestern Railroad between Chicago and Clinton, Iowa. The rear brakeman signals the engineer to test the brakes by applying and releasing them. This is the signal for “apply.” January 1943.

You want to maintain an Active Development Line (5). You have released versions that need maintenance and enhancements, and you want to keep the released code base stable. This pattern shows you how to isolate released versions from current development.


How do you ...

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